Answer:
0.329 OR -0.729
Step-by-step explanation:
x=1/2
distribute first (5x+1)2
=10x+2
combine like terms
=10x+2=7 → transpose 2 then change the sign
=10x=7-2
=10x=5
divide bother sides with 10 to let x remain
=10x/10=5/10
=x=1/2
