(4a-5) (5a+6)write down the products for each of the following
Answers
Answered by
19
Answer:
20a^2-a-30
Step-by-step explanation:
(4a-5)(5a+6)
=20a^2+24a-25a-30
=20a^2-a-30
Answered by
35
Step-by-step explanation:
(4a-5)(5a+6)
=4a(5a+6)-5(5a+6)
=[(4a*5a)+(6*4a)]-[(5a*5)+(-5*6)]
=[20a²+24a]-[25a+(-30)]
=(20a²+24a)-(25a-30)
=20a²+24a-25a+30
=20a²-a+30
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