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3 years ago

I need help with this problem

Mathematics

2 answers:

pychu [463]3 years ago

8 0

Step-by-step explanation:

Solution,

Given:-

Length=x+4

Width=x-9

Now,

By applying the formula for area of rectangle, we get

Area=length×width

Area=(x+4)(x-9)

Area=x(x-9)+4(x-9)

Area=x²-9x+4x-36

Area=x²-5x-36

Zarrin [17]3 years ago

5 0

L=x+4
B=x-9

$\\ \sf\longmapsto Area=LB$

$\\ \sf\longmapsto Area=(x+4)(x-9)$

$\\ \sf\longmapsto Area=x(x-9)+4(x-9)$

$\\ \sf\longmapsto Area=x^2-9x+4x-36$

$\\ \sf\longmapsto Area=x^2-5x-36$

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3 years ago

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∑ Hey, jillianwagler ⊃

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Step-by-step explanation:

⇒ Given info:

Factor completely $x^2 -64$

⇒ Solution:

Rewrite 64 as 8 ² because 8² is equal to 64. 8 ² = 8 × 8 = 64.

$=x^2-8^2$

Applying difference of two squares formula: $x^2-y^2=\left(x+y\right)\left(x-y\right)$

$=x^2-8^2=\left(x+8\right)\left(x-8\right)\\$

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