Evaluate: (4s+5t)² *
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★ (4s+5t)²
Simplify
• Expand the square
= (4s+5t)²
= (4s+5t)(4s+5t)
• Distribute
= (4s+5t)(4s+5t)
= 4s(4s+5t) + 5t(4s+5t)
• Distribute
= 4s(4s + 5t) + 5t(4s + 5t)
= 16s² + 20st + 5t(4s + 5t)
• Distribute
= 16s² + 20st + 5t(4s + 5t)
= 16s² + 20st +20st + 25t²
• Combine like terms
= 16s² + 20st +20st +25t²
= 16s² + 40st +251²
• Final Answer :-
= 16s² + 40st +25t²
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