Question

Помогите, очень надо!!!

Answer 1

4a²(x+7)+3(x+7)=(x+7)(4a²+a)
a=-0.5; x=1.05
(1.05+7)(4*(-0.5)²-0.5)=8.05*(4*0.25-0.5)=8.05*(1-0.5)=8.05*0.5=4.025