1. Thực hiện phép tính:
a) \(5x(3x-2)\)
b) \(\left( 8{{x}^{4}}{{y}^{3}}-4{{x}^{3}}{{y}^{2}}+{{x}^{2}}{{y}^{2}} \right):2{{x}^{2}}{{y}^{2}}\)
2. Tìm \(x\) biết
a) \({{x}^{2}}-16=0\)
b) \({{\left( 2x-3 \right)}^{2}}-4{{x}^{2}}=-15\)
A.1. \(a) 15{{x}^{2}}+10x\)
\(b) 4{{x}^{2}}y-2x+\frac{1}{2}\)
2. \(a) x=4 \) hoặc \(x=-4\)
\(b, x=2\)
B.1. \(a) 15{{x}^{2}}-10x\)
\(b) 4{{x}^{2}}y-2x+\frac{1}{2}\)
2. \(a) x=4 \) hoặc \(x=-4\)
\(b, x=2\)
C.1. \(a) 15{{x}^{2}}-10x\)
\(b) 4{{x}^{2}}y-2x+\frac{1}{2}\)
2. \(a) x=4 \) hoặc \(x=-4\)
\(b, x=1\)
D.1. \(a) 15{{x}^{2}}-10x\)
\(b) 4{{x}^{2}}y-2x+\frac{1}{2}\)
2. \(a) x=4 \)
\(b, x=-2\)
a) \(5x(3x-2)\)
b) \(\left( 8{{x}^{4}}{{y}^{3}}-4{{x}^{3}}{{y}^{2}}+{{x}^{2}}{{y}^{2}} \right):2{{x}^{2}}{{y}^{2}}\)
2. Tìm \(x\) biết
a) \({{x}^{2}}-16=0\)
b) \({{\left( 2x-3 \right)}^{2}}-4{{x}^{2}}=-15\)
A.1. \(a) 15{{x}^{2}}+10x\)
\(b) 4{{x}^{2}}y-2x+\frac{1}{2}\)
2. \(a) x=4 \) hoặc \(x=-4\)
\(b, x=2\)
B.1. \(a) 15{{x}^{2}}-10x\)
\(b) 4{{x}^{2}}y-2x+\frac{1}{2}\)
2. \(a) x=4 \) hoặc \(x=-4\)
\(b, x=2\)
C.1. \(a) 15{{x}^{2}}-10x\)
\(b) 4{{x}^{2}}y-2x+\frac{1}{2}\)
2. \(a) x=4 \) hoặc \(x=-4\)
\(b, x=1\)
D.1. \(a) 15{{x}^{2}}-10x\)
\(b) 4{{x}^{2}}y-2x+\frac{1}{2}\)
2. \(a) x=4 \)
\(b, x=-2\)
Loga
Hóa Học lớp 12
