Question

Find the value of polynomial 5xsquare-3x+7at x=-2

Answer 1

Answer:

P(x)=5x^2-3x+7

q(x)=-2

x+2=0

x=-2

5x^2-3x+2=0{when x=-2}

5(-2)^2-3(-2)+7=0

5(4)+6+7=0

20+13=33

therefore the value is 33