Advertisements
Advertisements
Question
Find the value of the polynomial 5x – 4x2 + 3 at x = –1.
Advertisements
Solution
p(x) = 5x – 4x2 + 3
x = –1
p(–1) = 5(–1) – 4(–1)2 + 3
= –5 – 4 + 3
= -9 + 3
= –6
Thus, the value of 5x – 4x2 + 3 at x = –1 is –6.
APPEARS IN
RELATED QUESTIONS
Find p(0), p(1) and p(2) for the following polynomial:-
p(t) = 2 + t + 2t2 – t3
Verify whether the following zeroes of the polynomial, indicated against them.
p(x) = x2, x = 0
Verify whether the indicated numbers is zeroes of the polynomials corresponding to them in the following case:
`f ( x ) = 3x +1, x = - 1/3`
Find the value of the polynomial 5x – 4x2 + 3 at x = 2.
Find the zero of the polynomial in the following:
h(x) = ax + b, a ≠ 0, a, b ∈ R
Verify whether the following are zeros of the polynomial, indicated against them, or not
p(x) = ax + b, x = `(-"b")/"a"`
Find the number of zeros of the following polynomial represented by their graph
Find the number of zeros of the following polynomial represented by their graph
Zero of the polynomial p(x) = 2x + 5 is ______.
`(-4)/5` is a zero of 4 – 5y
