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damientran
28.07.2019 •
Mathematics
Simplify the product using foil (2x-7)(5x+2) i'mma be honest i don't have an answer last time i checked foil is what they give you to make a swan out of your leftovers.
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Ответ:
Explanation:
FOIL stands for "First Outer Inner Last". That way, distribute the "2x" in the first parentheses to both values in the second parentheses first, then do the same for "-7". Afterwards, add all like values and you get your answer.
(2x-7)(5x+2)
2x(5x+2)+[-7(5x+2)]
10x²+4x-35x-14
10x²-31x-14
Ответ:
How to solve:
First find out the height of the bottom square, which is done by doing 3 x 3 which gives you 9
Next find out the height of the triangle by doing 5 - 3 which gives you 2
Find out the area of the triangle by doing 2 x 3 which gives you 6. 6 is not the area of one triangle but of two of them as a square. You need to divide 6 by 2 in order to find out the area of the triangle. This gives you 3.
3 + 9 = 12