Question

Use the discrimant to determine the number of real roots of M(x)= -4x^2+x+1?

Answer 1

Answer:

two real different roots

Step-by-step explanation:

Consider polynomial function

$M(x)=-4x^2+x+1.$

The discriminant is

$D=b^2-4ac=1^2-4\cdot (-4)\cdot 1=1+16=17.$

Since $D>0,$ the polynomial function $M(x)$ has two real different roots.