Question

Simplify the following expression.
2x² + 3x³ -5x² + x +7x+1+7x5 -3x²³ - 4
OA. 5x +5x +7x-3
OB. 9x - 4x +7x-3
OC. 9x - 4x +7x+5
OD. 9x5 +6x +7x+3

Answer 1

When simplifying the following expression we want to look first at adding like terms to together

2x² - 5x² = -3x²

Once the squared exponents are added together add the x’s together:

x + 7x + 7x = 15x

Now add the integers together:

1 + 5 + (-4) = 2

Since you can’t add exponents with each other unless the have the same exponent they stay the same:

The equation should look like this:

-3x² + 15x + 2 -3x²³

Now add the exponents together because it is exponents of x.

-6x^25 + 15x + 2

That is the most simplified version of the complex equation.