o3405163 o3405163
  • 14-12-2018
  • Mathematics
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Use the discrimant to determine the number of real roots of M(x)= -4x^2+x+1?

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frika
frika frika
  • 17-12-2018

Answer:

two real different roots

Step-by-step explanation:

Consider polynomial function

[tex]M(x)=-4x^2+x+1.[/tex]

The discriminant is

[tex]D=b^2-4ac=1^2-4\cdot (-4)\cdot 1=1+16=17.[/tex]

Since [tex]D>0,[/tex] the polynomial function [tex]M(x)[/tex] has two real different roots.

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