Question

(5x + 1)2 = 7
what are the solutions

Answer 1

x=1/2

Explanation:

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

Answer 2

0.329 OR -0.729

Explanation: