Question 971554
y = x^2 + 7 
y = 4x + 3
x^2+7=4x+3
x^2-4x+7-3=0
x^2+4x+4=0
(x+2)(x+2)=0
x-2=0
x=-2 ans.
y=-2^2+7
y=4+7=11 ans
y=4*2+3=8+3=11 ans.