Find the square of: [tex]i) \: 2a \: + \: b [/tex][tex]ii) \: 3a \: + \: 7b[/tex] About the author Melanie
Step-by-step explanation: 1. (2a+b)² =(2a)² + 2×2a×b + b² = 4a²+4ab+b² 2. (3a+7b)² = (3a)²+2×3a×7b+(7b)² =9a²+42ab+49b² Reply
Step-by-step explanation:
1. (2a+b)²
=(2a)² + 2×2a×b + b²
= 4a²+4ab+b²
2. (3a+7b)²
= (3a)²+2×3a×7b+(7b)²
=9a²+42ab+49b²