Question

find the value of polynomial 4x²-5x+3 when x=-1 & x= ½​

Answer 1

Answer:

The value of polynomial 4x^2 - 5x +3 when x= -1 is 4.

The value of polynomial 4x^2 - 5x +3 when x= 1/2 is 3/2

Explanation:

f(x) = 4x^2 - 5x +3

f(-1) = 4(-1)^2 -5x +3

= 4

Again,

f(x) = 4x^2 - 5x +3

f(1/2) = 4(1/2)^2 - 5(1/2) +3

= 3/2

Answer 2

The answer of polynomial 4x²-5x+3 when x=-1 is 12

The answer of polynomial 4x²-5x+3 when x=½ is 3/2

Step by step explanation:

If x=-1

p(x)= 4(-1)²-5(-1)+3

p(x)=4+5+3

p(x)=12

If x=½

p(x)= 4(½)²-5(½)+3

p(x)= 4×1/4 - 5/2 + 3

p(x)= 1 - 5/2 + 3

Taking L.C.M

p(x)= 2 - 5 + 6 / 2

p(x)= -3 + 6 / 2

p(x)= 3/2

The value of polynomial 4x²-5x+3 when x=-1 is 12 & when x= ½​ is 3/2

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