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ahrayia [7]
3 years ago
15

7x^4-9x^3-4x^2+5x+6)-(2x^4+3x^3-x^2+x-4)​

Mathematics
2 answers:
alina1380 [7]3 years ago
7 0

Answer:

5x⁴-12x³-3x²+4x+10

Step by step explanation:

(7x⁴-9x³-4x²+5x+6)-(2x⁴+3x³-x²+x-4)

remove unnecessary parentheses:

7x⁴-9x³-4x²+5x+6-(2x⁴+3x³-x²+x-4)

When there is a minus sign in front of an expression in parentheses, switch the sign of each term in the expression:

7x⁴-9x³-4x²+5x+6<u>-2x</u><u>⁴</u><u>-3x</u><u>³</u><u>+x</u><u>²</u><u>-x+4</u>

collect like terms:

<u>7x⁴-</u>9x³-<u>4x²</u>+<em><u>5x</u></em><em> </em>+6<u>-2x⁴-</u>3x³+<u>x²-</u><em><u>x</u></em>+4

5x⁴-12x³-3x²+4x+10

poizon [28]3 years ago
3 0

Answer:

5x^4 - 12^3 - 3x^2 + 4x + 10

Step-by-step explanation:

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Find the area of the un-shaded part. ABCD and EFGH are two rectangles. AB = 10 inches, BD = 8 inches EF = 6 inches FH = 4 inches
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Answer:

56 inches!

Step-by-step explanation:

Rectangles ABCD and EFGH are concentric, that means that they are almost the same but their sides have a different ratio.

First, lets find the area of EFGH.

1). Area of EFGH = a * b = 4 * 6 = 24 inches

Then we will find the area of ABCD.

2). Area of ABCD = a * b = 10 * 8 = 80 inches.

Now we know the areas of the rectangles, we can find the area of the un-shaded part.

3). Area of ABCD - Area of EFGH = 80 - 24 = 56 inches

So, 56 inches will be your answer.

Hope this helps))) ^‿^

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Step-by-step explanation:

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Step-by-step explanation:

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