Question

Giải giúp ạ

Answer 1

bài 3:

a) (x-3)(x+1)=0

[x=3x=−1[x=3x=−1

b)M=24²+2.24.76+76²

      =(24+76)²

      =100²=10000

Answer 2

\(a,\Leftrightarrow\left(x-3\right)\left(x+1\right)=0\Leftrightarrow\left[{}\begin{matrix}x=3\\x=-1\end{matrix}\right.\\ b,M=24^2+2\cdot24\cdot76+76^2=\left(24+76\right)^2=100^2=10000\)

Answer 3

a,⇔(x−3)(x+1)=0⇔[x=3x=−1

b,M=242+2⋅24⋅76+762=(24+76)2=1002=10000