Question

Find the value of the polynomial 3x square - 4x square+7x-5 when x=3

Answer 1

★ Answer :

We have to find the value of 3x² - 4x² + 7x - 5.

When, x = 3

So, we will put value of x in the given polynomial.

→ 3(3)² - 4(3)² + 7(3) - 5

→ 3(9) - 4(9) + 21 - 5

→ 27 - 36 + 21 - 5

→ 48 - 41

→ 7

So, value of the polynomial (3x² - 4x² + 7x - 5) is 7.

$\rule{200}{1}$

Answer 2

Answer:

3(3)square-4(3)square+7(3)-5

=3×9-4×9+7×3-5

=27-36+21-5

=27+21-36-5

=48-41

=7 Ans