Question

(10x+7)^2=5

Answer 1

\[100x ^{2}+140x+49=5\]\[100x ^{2}+140x+44=0\] divide by 4 getting\[25x ^{2}+35x+11=0\] From here on use quadratic formula.

Answer 2

a=25
b=35
c=11\[-35 \pm \sqrt{35^{2}-(4)(25)(11)}\over50\]\[-35\pm \sqrt{125}\over50\]\[-35\pm11.180 \over 50\]
x=-0.476
x=-1.2236