Find the value of the polynomial 5x – 4x2 + 3 at x = 2 and x = –1
Find the value of the polynomial 5x – 4x2 + 3 at x = 2 and x = –1
Pawan Prajapati , 5 Years ago
Grade 12
9 grade maths> Find the value of the polynomial 5x – 4x ...
1 AnswersHarshit Singh
Dear student
Let the polynomial be f(x) =5x – 4x^2+ 3
Now, for x = 2,
f(2) = 5(2)– 4(2)^2+ 3
=> f(2) = 10 – 16 + 3 = –3
thus, value of the polynomial 5x – 4x^2+ 3 at x = 2 is -3.
Similarly, for x = –1,
f(–1) = 5(–1) – 4(–1)^2+ 3
=>f(–1) =–5–4 + 3 = -6
Thus, value of the polynomial at x = -1 is -6.
Thanks
Let the polynomial be f(x) =5x – 4x^2+ 3
Now, for x = 2,
f(2) = 5(2)– 4(2)^2+ 3
=> f(2) = 10 – 16 + 3 = –3
thus, value of the polynomial 5x – 4x^2+ 3 at x = 2 is -3.
Similarly, for x = –1,
f(–1) = 5(–1) – 4(–1)^2+ 3
=>f(–1) =–5–4 + 3 = -6
Thus, value of the polynomial at x = -1 is -6.
Thanks
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