(a-2b+5c)(a-b)-(a-b-c)(2a+3c)+(6a+b)(2c-3a-5b)
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Answer :- 19a^2 - 3b^2 -38ab -bc -10ac
Solution :- just simplify them,
= a^2 -2ab + 5cb - ab + 2b^2 -5cb -2a^2 -2ab -2ac + 3ac -3bc - 3cb +12ac + 2bc -18a^2 -3ab -30ab -5b^2
= (a^2 -2a^2 -18a^2) + (2b^2 - 5b^2) + (-2ab -ab - 2ab -3ab -30ab) + ( 5cb -5cb - 3cb+ 2bc) +(-2ac +12ac )
= - 19a^2 - 3b^2 -38ab -bc -10ac << answer
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Solution :- just simplify them,
= a^2 -2ab + 5cb - ab + 2b^2 -5cb -2a^2 -2ab -2ac + 3ac -3bc - 3cb +12ac + 2bc -18a^2 -3ab -30ab -5b^2
= (a^2 -2a^2 -18a^2) + (2b^2 - 5b^2) + (-2ab -ab - 2ab -3ab -30ab) + ( 5cb -5cb - 3cb+ 2bc) +(-2ac +12ac )
= - 19a^2 - 3b^2 -38ab -bc -10ac << answer
It took much type to solve and type, please make my effort worth full
Please mark me Brainliest, please
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