Question

What is the sum or difference 4x10 – 9x10 (1 point) –5x10 –5x20 –36x10 –36x20

this is the cca test I need all the answers this is the first 2

Answer 1

4×10-9×10=-50
-5×10-5×20-36×10-36×20=-870

Answer 2

(a)
`4x^(10) - 9x^(10)`

Both terms
`4x^(10)` and
`- 9x^(10)` are like terms

They have same exponent
`x^(10)`

So we add or subtract the coefficents

4 - 9 is -5

`4x^(10) - 9x^(10)` =
`- 5x^(10)`

(b)
`-5x^(10) - 5x^(20) - 36x^(10) - 36x^(20)`

Combine like terms by adding or subtracting the coefficient of like terms

`-5x^(10) - 36x^(10) - 5x^(20) - 36x^(20)`

`-41x^(10) - 41x^(20)`