The polygons are similar. find the missing side length

Mathematics

1 answer:

Step2247 [10]3 years ago

5 0

The answer is 16 use cross multiplication

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Step-by-step explanation:

We need to multiply the two terms

$(2x + y) ( 5x - y + 3)\\=2x (5x - y + 3) + y( 5x - y + 3)\\=10x^2 -2xy +6x +5xy -y^2 +3y\\checking\,\, for \,\, the \,\, like \,\, terms\,\, (\,\,having\,\, same\,\, variables\,\,)\\=10x^2 -2xy +5xy +6x -y^2+3y\\=10x^2 + 3xy +6x -y^2 +3y$

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