13. Simplify each of the following products:
(1) {x/2-2/5) (2/5-x/2) - x^2 + 2x
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Step-by-step explanation:
(1) (x/2 - 2/5) (2/5 - x/2) - x^2 + 2x
= x/2 (2/5 - x/2) -2/5 (2/5 - x/2)-x^2+2x
=2x/10 - x^2/4 - 4/25 + 2x/10 - x^2 + 2x
=- x^2/4 - x^2 +(2x/10+2x/10+2x)- 4/25
= - 5x^2/4 + 12/5x - 4/25
kriti3654:
that would be -4/25
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