simplify (2a+b)(3c-d)+(5a-b)(7c+d)+5(3ac+2bd) please tell me the answer if you tell you will get 100 points
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Step-by-step explanation:
(2a+b)(3c-d)+(5a-b)(7c+d)+5(3ac+2bd)
=2a(3c-d)+b(3c-d)+5a(7c+d)-b(7c+d)+15ac+10bd
=6ac-2ad+3bc-bd+35ac+5ad-7bc-bd+15ac+10bd
=(6ac+35ac+15ac)+(-2ad+5ad)+(3bc-7bc)+(-bd-bd+10bd)
=56ac+3ad-4bc+8bd
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