Question

(X+3)(x+7)-x(x+8)=16
решите подробно

Answer 1

x^2 +7x + 3x +21- x^2-8x=16
x^2+2x+5=0
x=16/2
x=8

Answer 2

xˇ2+3x+7x+21-xˇ2-8x = 16
xˇ2 - xˇ2 +(3x+7x-8x)=16
2x = 16, x=16:2
x=8