Answer:
x=(
+7)/4, (-
+7)/4
Explanation:
2x²+1=7x
2x²-7x+1=7x-7x
2x²-7x+1=0
2(x²-7x/2+1/2)=0
x²-7x/2+1/2=0
x²-7x/2+8/16=0
x²-7x/2+49/16-41/16=0
(x-7/4)^2-41/16=0
(x-7/4)^2-41/16+41/16=0+41/16
(x-7/4)^2=41/16
x-7/4=
/4 x-7/4=-
/4
x=
/4+7/4 x=-
/4+7/4
x=(
+7)/4, (-
+7)/4