Question

"Simplify. (4x2 – 3x + 2) – (2x2 + 5x – 7)"
How do I solve this?

Answer 1

Any ideas?

Answer 2

Subtracting polynomials is like subtracting real numbers.

How do you subtract two real numbers a and b in algebra?

$$\Huge a-b = ?$$

Answer 3

To subtract b you add the opposite of b:

$$\Huge a-b = a+(-b)$$

for example $$2-4 = 2 + (-4)$$

Answer 4

To subtract a polynomial, you add the opposite of that polynomial and then simplify.