expand (2a-3b-c)^2.
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Answered by
1
Step-by-step explanation:
(2a-3b-c)²=(2a)²+(3b)²+ c²- 2(2a)(3b)+2(3b)(c)-2(c)(2a)
=4a²+ 9b²+c²-12ab+6bc-4ac
Answered by
0
Answer:
2²a²-3²b²c² -3²=9=3²
2²a²3²b²c²
(2×3)²=6²
6²a²b²c²=(6abc)² answer
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