x^2(4-2x) Expanding brackets?

Question

Please could someone tell me what x^2 multiply 2x is because I have no idea. My guess is 2x^2 or 3x^2

Answer 1

well...let's see
you have x^2 multiplied 2x. The degree(I think this is the appropriate word) of x is 2 for the first factor and 1 for the second one. By multiplying the two numbers you have to sum the degree of each factor. So you get the degree of x by summing up 2 and 1.----->x^(2+1)=x^3

so the equation is 4x^2 - 2x^3

Answer 2

x² X 2x = x X x X 2 X x = 2 X x X x X x = 2x³
Note that x² X x = x² X x^(1) = x³
ie when multiplying powers of x , ADD the indices.
Example
2x² X 5x³ = 10.x^(5)

Thus in the given question:-
x².(4 - 2x) = 4x² - 2x³

Answer 3

a million A) 3(4a + 5) + 2(3a + 4) = 3*4a + 3*5 + 2*3a + 2*4 = 12a + 15 + 6a + 8 = 12a + 6a + 15 + 8 = 18a + 23 a million B) 5(4b + 3) + 3(2b + a million) = 5*4b + 5*3 + 3*2b + 3*a million = 20b + 15 + 6b + 3 = 20b + 6b + 15 + 3 = 26b + 18 = 2(13b + 9) a million C) 2(3 + 6c) + 4(5 + 7c) = 2*3 + 2*6c + 4*5 + 4*7c = 6 + 12c + 20 + 28c = 12c + 28c + 6 + 20 = 40c + 26 = 2(20c + 13) ---------------- 2 A) 2(4x + 5) + 3(5x - 2) = 8x + 10 + 15x - 6 = 8x + 15x + 10 - 6 = 23x + 4 2 B) 4(3y + 2) + 5(3y - 2) = 12y + 8 + 15y - 10 = 12y + 15y + 8 - 10 = 27y - 2 2 C) 3(4 + 7z) + 2(3 - 5z) = 12 + 21z + 6 - 10z = 21z - 10z + 12 + 6 = 11z + 18

Answer 4

Hi,

To multiply this out, you need to distribute the x squared over the factor 4 - 2x. Here's what you would get after doing so:

4x^2 - 2x^3

I hope that helps you out! Please let me know if you have any other questions regarding the steps I used in the different examples!

Sincerely,

Andrew

Answer 5

x^2 ( 4 - x ) = 4 x^2 - 2 x^3

x^2 multiply 2x is 2 x^3

Answer 6

4x^2-2x^3