(3x+5)² - (3x-5)²
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0
Step-by-step explanation:
3x² +2×3x×5+5²- (3x)²- 2×3x×5+5²
9x²+30x+25-9x²+30x- 25
60x
Answered by
2
Answer:
The answer is = 30x.
Step-by-step explanation:
Given expression, (3x+5)² - (3x-5)²
={(3x+5)+(3x-5)} {(3x+5)-(3x-5)} [ as we know, a²-b²= (a+b) (a-b)]
={3x+5+3x-5} {3x+5-3x+5}
=(6x) (10)
=(6×10)x
=60x
The answer is = 60x.
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