Simplify the sum. (8u3 + 8u2 + 6) + (4u3 – 6u + 3)

Mathematics

2 answers:

Sergio [31]3 years ago

5 0

Answer:

12u³ + 8u² - 6u + 9

Step-by-step explanation:

andrew11 [14]3 years ago

3 0

(8u³ + 8u² + 6) + (4u³<span> - 6u + 3) =
</span>8u³ + 8u² + 6 + 4u³ - 6u + 3 =
12u³ + 8u² - 6u + 9

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The rectangle below has an area of x^2-15x+56x square meters and a length of x-7 meters.

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$Heya \: \: ! \\ \\ \\ Area \: of \: rectangle \: = Length \: \times Width \\ \\ We \: are \: given \: that \: , \\ \\ Length \: = \: \: ( \: x - 7 \: ) \: metres \\ Area \: \: \: \: \: = \: \: \: ( \: {x}^{2} - 15x + 56 \: ) \: square \: meters \\ \\ Therefore \: \: , \: \\ {x}^{2} - 15x + 56 = ( \: x - 7) \times Width \\ \\ Width = \frac{ ({x}^{2} - 15x + 56 )}{(x - 7)} \\ \\ Width = \frac{(x - 7)(x - 8)}{(x - 7)} \\ \\ \\ Width = ( \: x - 8 \: ) \: \: m \: \: \: \: \: \: \: \: \: Ans.$