Solve
1. 81x2-49y2
2. (2x+8)(2x+8)
3. (20-7) (20+7)
Answers
Answered by
0
Answer:
1.81x²-49y²
=(9x)²-(7y)²
=(9x-7y) (9x+7y)
2.
(2x+8) (2x+8)
=(2x+8)²
=(2x)²+2×2x×8+(8)²
=4x²+32x+64
3.
(20-7) (20+7)
=(20)²-(7)²
=400-49
=351...
HOPE THIS ANSWERS YOUR QUESTION
Answered by
1
hope it helps u Buddy......
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