Simplify (2x+5y)^2-(2x-5y)^2
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Answers
Answered by
0
Answer:
ANSWER
(2x+5y)
2
+(2x−5y)
2
[Using, (a±b)
2
=a
2
±2ab+b
2
]
=(2x)
2
+2×2x×5y+(5y)
2
+(2x)
2
−2×2x×5y+(5y)
2
=4x
2
+20xy+25y
2
+4x
2
−20xy+25y
2
=8x
2
+50y
2
Step-by-step explanation:
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Answered by
1
Answer:
40xy
Step-by-step explanation:
using the identity a^2-b^2, we can rewrite the question as,
=(2x+5y+2x-5y)(2x+5y-2x+5y)
=(4x)(10y)
= 40xy
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