1.Using identities solve 1) (b+7)²
2) (3y-2)²
Answers
Answered by
1
Answer:
All the best!
Hope it helps!
Attachments:
Answered by
1
1. b² + 14b + 49
2. 9y² - 6y + 4
Step-by-step explanation:
1. (b+7)²
by using identity a² + 2ab + b²
= (b+7)×(b+7)
= (b)² + 2(b)×(7) + (7)²
= b² + 14b + 49
2. (3y-2)²
by using identity a² - 2ab + b²
= (3y - 2)×(3y-2)
= (3y)² - 2(3y)×(-2) + (-2)²
= 9y² - 6y + 4
Similar questions