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KIM [24]
3 years ago
11

Use foil method to find (w+5)(w^2+3w)

Mathematics
1 answer:
Anvisha [2.4K]3 years ago
6 0
First
Outer
Inner
Last


(w + 5)(w^2 + 3w)

F (w)(w^2) = w^3 add the exponents

O (w)(3w) = 3w^2

I (5)(w^2) = 5w^2

L (5)(3w) = 15w


New expression: w^3 + 5w^2 + 3w^2 + 15w

Combine like terms.


Final answer: w^3 + 8w^2 + 15w
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How many square feet of outdoor carpet will we need for this hole?
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Given:
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Area = L x W

Level 1 = 5 ft * 2 ft = 10 ft²
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4 0
3 years ago
Question:
Genrish500 [490]

Answer:

x=56 and the exterior angle is 116

Step-by-step explanation:

We will call the unknown angle in the triangle y.  Angle y and the angle (2x +4) form a straight line so they make 180 degrees.

y + 2x+4 =180

Solve for y by subtracting 2x+4 from each side.

y + 2x+4 - (2x+4) =180 - (2x+4)

y = 180-2x-4

y = 176-2x


The three angles of a triangle add to 180 degrees

x+ y+ 60 = 180

x+ (176-2x)+60 = 180

Combine like terms

-x +236=180

Subtract 236 from each side

-x+236-236 = 180-236

-x = -56

Multiply each side by -1

-1*-x = -56*-1

x=56

The exterior angle is 2x+4.  Substitute x=56 into the equation.

2(56)+4

112+4

116


8 0
4 years ago
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