Question

When x²+x-3 is subtracted from 3x² - 5, the result is

A. -2x² + x + 2
B. 2x² - x - 2
C. 2x² - x + 2
D. 4x²+x-8​

Answer 1

B 2x² - x - 2

Explanation:

When x²+x-3 is subtracted from 3x² - 5

We get (3x² - 5) - (x² + x - 3)

==> step 1 remove parenthesis and change signs

3x² - 5 - x² - x + 3

==> step 2 combine like terms

2x² - x - 2

Remember like terms are terms with the same variable and degree.

For example 3a² and 5a² would be like terms because both terms have a variable of "a" and a degree of 2