expand ( 5 a - 3b ) ^2
Answers
Answered by
1
Step-by-step explanation:
= (5a)^2 + (3b)^2 - 2(5a * 3b)
= 25a^2 + 9b^2 - 2*15ab
= 25a^2 + 9b^2 - 30ab
hope it helps.....
Answered by
1
Answer:
25a²+9b²+30ab.
Step-by-step explanation:
Given,
(5a-3b)²
We know that...
(a-b)² = a²+b²-2ab.
=> (5a-3b)²
=> (5a)²+(-3b)²-2(5a)(-3b)
=> 25a²+9b²+30ab...
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