Question

Спростити вираз:

a) (x-4)(x+4)- x•(x+3)

б) (x + 5)² + (x-3) (x+8) ​

Answer 1

а) (x-4)(x+4)- x•(x+3) = х²-16 - х² - 3х = -16-3х

б) ( х + 5 )² + (х-3) (х+8) = х² + 10х + 25 + х² + 8х - 3х - 24 = 2х² + 15х + 1

Answer 2

a) x²-16-x²-3x

б)x²+10x+25+x²+8x-3x-24