How do you find the zeros by rewriting the function y=4x^2+60x in intercept form?
1 Answer
Sep 2, 2017
Explanation:
"factorise the quadratic"
y=4x(x+15)larrcolor(red)" in intercept form"
"to find zeros let " y = 0
rArr4x(x+15)=0
"now equate each factor to zero and solve for x"
4x=0rArrx=0
x+15=0rArrx=-15
rArrx=0,x=-15" are the zeros"