Could someone check my work? Thanks.

Question

P(-3) = 4×^3 - 5x^2 + 7x -10
-12^3 + 15^2 - 21 - 10
-1728 + 225 - 31
-1503 - 31 = -1534

Answer 1

If your expression mean

4 x³ - 5 x² + 7 x - 10

then:

4 ∙ ( - 3 )³ - 5 ∙ ( - 3 ) ² + 7 ∙ ( - 3 ) - 10 =

4 ∙ ( - 27 ) - 5 ∙ 9 - 21 - 10 =

-108 - 45 - 21 - 10 = - 184

Answer 2

So I wouldn't multiply the coefficients by -3 first?

Answer 3

Mou first do mathematical operation with x then multiply.

Answer 4

You not Mou

Answer 5

Okay, I understand now. Thank you so much for your help; now I know not to make that mistake again when solving these types of problems. :)