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1. Multiply (3a + 3b) by …

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1. Multiply (3a + 3b) by (2a – 2b). Verify the result for a = 2 and b = (-2)

Posted by Kanady Kaipeng 5 years ago

CBSE > Class 07 > Mathematics

2 answers

Yogita Ingle 5 years ago

(3a + 3b) (2a – 2b)

= 3a ( 2a - 2b) + 3b ( 2a- 2b)

= 6a² - 6ab + 6ab - 6b²

= 6a²- 6 b²

Put a = 2 and b = (-2)

= 6(2)² - 6(-2)²

= 6(4) - 6 (4)

= 24 - 24

= 0

1Thank You

Shitanshu Jaiswal 5 years ago

1Thank You

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CBSE > Class 07 > Mathematics