Question

(2x-7)*-11(2x-7)+30=0

Answer 1

2x-7=a
a²-11a+30=0
a1+a2=11 U a1*a2=30
a1=5⇒2x-7=5⇒2x=12⇒x=6
a2=6⇒2x-7=6⇒2x=13⇒x=6,5