How do you find all zeros of the function $f(x)=-2x^2-17x+30$ ?

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Answer 1 · 2018-04-30T13:02:28

Zeros of the function $f(x)$ are $x=-10 and x= 1.5$

$f(x)=-2 x^2-17 x+30 or f(x)= -2 x^2-20 x +3 x+30$

or $f(x)=-2 x(x+10)+3 (x+10)$ or

$f(x)=(x+10)(-2 x+3 ) :. f(x)=0$ when

$x=-10 or x=1.5$

Hence zeros of the function $f(x)$ are $x=-10 and x= 1.5$ [Ans]

How do you find all zeros of the function f(x)=-2x^2-17x+30f(x)=-2x^2-17x+30?