Question

Solve (7x² + 2 - x) + (x² - 7 - 2x)

Answer 1

The expression (7x² + 2 - x) + (x² - 7 - 2x) simplifies to 8x² - 3x - 5 by combining like terms. To find the values of x that make this expression zero, one could use the quadratic formula or try factoring it; however, the question only asked for simplification, not solving an equation.

Step-by-step explanation:

The expression (7x² + 2 - x) + (x² - 7 - 2x) simplifies to 8x² - 3x - 5 by combining like terms. To find the values of x that make this expression zero, one could use the quadratic formula or try factoring it; however, the question only asked for simplification, not solving an equation.

The student is asked to solve the expression (7x² + 2 - x) + (x² - 7 - 2x). To solve this, we will combine like terms. First, let's add together the x² terms:

• 7x² + x² = 8x²

Next, combine the x terms:

• -x - 2x = -3x

Finally, add the constant terms:

• 2 - 7 = -5

By combining all these, we get the simplified expression:

8x² - 3x - 5

To find the values of x that satisfy this equation when set to zero, we could either factor the quadratic or use the quadratic formula. However, without an equation set to zero, we leave the expression simplified as above.