Question

a. Solve 4x^2=20
b. Find the x-intercepts of f(x) =4x^2-20
a. What are the solutions?
x=_____.
b. What are the intercepts?
The x-intercepts are_____.

Answer 1

4x^2=20
4x^2-20 =0 divide by4
x^2-5=0
x=-+sqrt5

Answer 2

when f(x)=0, x1=sqrt5 and x2=-sqrt5 x intercepts
when x=0, fx()=-20 y intercept

Answer 3

oops sorry
when x=0, f(x)=-20 y intercept