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Expand & simplify
4
(
x
+
5
)
+
5
(
x

5
)


Sagot :

4(x+5) + 5(x-5)

The first step is to distribute (PEMDAS --> parenthesis)

4x + 20 + 5x - 25      Now combine like terms

9x - 5

Thus, the answer is 9x-5