2/5(-5ch + 10) can be expanded as follows:
First, distribute the 2/5 to both terms inside the parentheses:
(2/5)(-5ch) + (2/5)(10)
Next, multiply each term by the scalar:
(-10/5)ch + (20/5)
Simplify the expression:
-2ch + 4
Expand 2/5(-5c h+10)
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