`5x-1⋮x+2`
`⇒(5x+10)-11⋮x+2`
`⇒5(x+2)-11⋮x+2`
Vì `5(x+2)⋮x+2`
`⇒-11⋮x+2`
`⇒x+2∈Ư(-11)={±1;±11}`
`⇒` Ta có bảng :
$\left[\begin{array}{ccc}x+2&1&-1&11&-11\\x&-1&-3&9&-13\end{array}\right]$
`x∈{-1;-3;9;-13}`
Giải thích các bước giải :
`5x-1 vdots x+2``=>(5x+10)-10-1 vdots x+2``=>5(x+2)-11 vdots x+2``=>-11 vdots x+2``=>x+2∈Ư(-11)``Ư(11)={+-1; +-11}``=>x+2∈{+-1; +-11}``=>x∈{-13; -3; -1; 9}`Vậy : `x∈{-13; -3; -1; 9}` thì `5x-1 vdots x+2`
Bạn nào giúp mình câu1 và câu 2 phần điều chế đi ạ
why don't we them on the trip take mountain ---) I suggest
Tìm x thuộc Z sao cho: a) 6x+3 chia het cho x; b) 4x+4 chia hết cho 2x-1; dx^2-9x+7 chia hết cho x-9. AI NHANH 5 SAO VÀ 1 CÂU TRẢ LỜI HAY
Ngày 8-3 ưa tiên con gái nên nữ vẽ pic 1 ko màu ko line ko cần chụp rõ ko cần ký.Con trai vẽ pic 2 có màu có line chụp rõ nét phải ký combo Hoidap Oke.Thế đủ công = chưa zậy ÔvÔ
giải hpt $ \left \{ {{x+1=y} \atop {\sqrt[]{x+2}+\sqrt[]{4-y}=x^3+y^2-4x-2y}} \right.$
Giúp mình với 💕 chiều học rồi 💕
thu gọn và tìm bậc của đa thức: c=5x^3y^2+3x^2y^3-1/3x^4y^5-1/7+1/2x^2y^3-3x^4y^5+1/3-4x^3y^2
I/ Fill in the blank using words given in the brackets. Each word can be used more than once. Kinematics (scalar, distance, acceleration, gradient, vector, trajectory, co-planar, velocity, constant, slope, magnitude, parabola, displacement, resistance, speed, direction, free falling). 1/ ..(1).....................are quantitiesthat have magnitudeonly. 2/ Vectorsare quantitiesthat have ..(2)......................... as well as ..(3)................................ 3/ ....(4).......................... vectors are vectors that lie in the same plane. 4/ ..(5).............. is the length of the path taken while ..(6).....................is the straight-line distanceand the directionfrom a fixed point. ...(5).. ........................is a scalarquantity and ..(6)..............is a vector quantity. 5/ …(7)……...is the …...(8)............… travelled per unit time. Its SI unit is meter per second (ms -1 ). 6/ ...(9)..............................… is the rate of change of displacement. 8/ ....(10).........................is the rate of the change of velocity. Its magnitudeis given by the ... (11)...............or ..(12)............................ of a (v-t) graph. 9/ Consider a body moving with uniformor ...(13)................................. accelerationin a straight-line. 10/ ...(14).................… refers to motion under the influence of a uniform gravitational field without air resistance. 11/ ..(15).........................… refers to the resistive force acting on a body moving through air. Its . (16).................. is always opposite to the direction of motion. Its .(17)... .......depends on the speed and cross-section area of the body, and the density of the air. 12/ The path or the ...(18)............................ of a body, due to uniform velocityin one direction and a uniform accelerationin a perpendicular direction, is a curve called ...(19).......................… 13/………(20)……….: A situation in which the forces acting upon an object are in balance
Lm nhưng sợ sai , giúp mk nhé <3
Sao cuộc đời tôi khổ thế này . Lúc nào cũng bị hack nick Vẽ anime buồn
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