Math, asked by vivitharathna12, 11 months ago

divide:
(7a^2-28a-315) by (7a-63)​

Answers

Answered by codiepienagoya
6

Divide:

Step-by-step explanation:

\ Given \ that:\\\\(7a^2-28a-315) \div (7a-63)\\\\\rightarrow \frac{7a^2-28a-315}{7a-63}\\\\\rightarrow \frac{7(a^2-4a-45)}{7(a-9)}\\\\\rightarrow \frac{(a^2-4a-45)}{(a-9)}\\\\\rightarrow \frac{(a^2-(9-5)a-45)}{(a-9)}\\\\\rightarrow \frac{(a^2-9a+5a-45)}{(a-9)}\\\\\rightarrow \frac{(a(a-9)+5(a-9)}{(a-9)}\\\\\rightarrow \frac{((a-9)(a+5))}{(a-9)}\\\\\rightarrow (a+5)\\\\

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