Question

Преобразуйте в многочлен x^2+(8x-2)^2

Answer 1

x²+(8x-2)²=х²+64х²-32х+4=65х²-32х+4

Answer 2

$\displaystyle \tt x^2+(8x-2)^2=x^2+(8x)^2-2\cdot8x\cdot2+2^2=x^2+64x^2-32x+4=\\\\ \displaystyle \tt =\bold{65x^2-34x+4}$