Question

F(x)=x^2-2x+3; f(x)=-2x+28

Answer 1

(-5, 38) and

(5,18)

Explanation:

`x^2-2x+3=-2x+28\\<=> x^2-2x+3+2x=28\\<=> x^2 = 28-3=25\\<=> x^2-25=0\\<=> x^2-5^2 =0\\<=> (x-5)(x+5)=0\\<=> x = 5 \ or \ x=-5`

so the solutions are

(-5, 38) and

(5,18)