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"#
