Question

A function f(x) is expressed as f(x)= 5x2 + 22x-15. The critical points of the function are...?
please give answer with steps​

Answer 1

Answer:

critical pts:the value of x for which f(x) or y is 0

so,

f(x)= 5x2 + 22x-15=0

5x²+25x-3x-15=0

5x(x+5) -3(x+5) =0

(5x-3) (x+5) =0

if a(b) =0

a=0 or b=0

same here

5x-3=0 or x+5=0

x=3/5 or -5