Question

subtract 3p²-2q² from 9p²-6q2.​

Answer 1

Step-by-step explanation:

subtract 3p²-2q² from 9p²-6q2.

3p²-2q² - 9p²-6q2.

3p²- 9p²-2q² -6q2..

6p²-2q² -6q2.

2( 3p²-q² -6q)

Answer 2

6p²-4q²

Step-by-step explanation:

$\underline{\bold{Question:}}$

Subtract 3p²-2q² from 9p²-6q²

$\underline{\bold{Solution:}}$

Since we are going to subtract 3p²-2q² from 9p²-6q²,:

⇒(9p²-6q²)-(3p²-2q²)

⇒9p²-6q²-3p²+2q²

Why the signs are changed? This is so because,

→When a negative sign is multiplied with negative sign, the product formed is positive.

Ex: -(-) = +

→When a negative sign is multiplied with positive sign, the product formed is negative.

Ex: -(+) = -

⇒9p²-6q²-3p²+2q²

⇒9p²-3p²-6q²+2p²

⇒6p²-4q²

$\underline{\bold{Final\:Solution:}}$

On subtracting 3p²-2q² from 9p²-6q², we get the answer as 6p²-4q².