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Bumek [7]
3 years ago
15

Express the area of each figure as a monomial. Solve 7x^4 if the formula is s^2.

Mathematics
1 answer:
loris [4]3 years ago
5 0
The figure given was a circle with a radius = 7x^4

Area of a circle = π r²

Area of a circle = 3.14 * (7x^4)²
Area of a circle = 3.14 * 7² * x^(4*2)
Area of a circle = 3.14 * 49 * x^8
Area of a circle = 153.86x^8

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We know that the formula for the area of a rectangle is height * width. Thus, we can multiply these two expressions together:

2x^4\cdot (x^2+8x+15)\\

Now, we know through the distributive property that we can distribute the 2x^4\\ to everything in the parenthesis. Once this is done, we get:

2x^4 \cdot x^2+2x^4\cdot8x+2x^4\cdot15

Now, we know through the power rule that when two exponents are multiplied together with the same base, the exponent can be added together (x^a \cdot x^b = x^{a+b}). This then would make our equation:

2x^{4+2}+16x^{4+1}+30x^4\\

Giving us for our final answer:

2x^{6}+16x^{5}+30x^4\\

Hope this helps!

8 0
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