Question

why are ¼and-1 zeroes of the polynomials p(x)=4x²+3x-1​

Answer 1

Answer:

let p(x) = 1/4

Explanation:

p(x) = 4x2 + 3x-1

p(1/4) = 4(1/4)2 + 3(1/4) -1

= 4(1/16) + 3(1/4) -1

= 1/4 + 3/4 -1

= 1+3/4 - 1

=1 - 1

=0

let p(x) be -1

p(x)= 4x2 + 3x - 1

p(-1)=4(-1)2+3(-1) -1

= 4(1) -3 -1

= 4 - 3 - 1

= 1 - 1

= 0

Therefore 1/4 and -1 are the zeroes of the polynomial.