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Aloiza [94]
3 years ago
10

How to do foils in algebra

Mathematics
1 answer:
Leno4ka [110]3 years ago
8 0
Foils stands for first, outer, inner, last.

For example:

(3x + 5)(2x + 3)

Multiply the firsts together.

3x * 2x = 5x²

Now multiply the outer together.

3x * 3 = 9x

Now multiply the inners.

5 * 2x = 10x

Now multiply the lasts.

5 * 3 = 15

so the answer would be:

5x² + 9x + 10x + 15
5x² + 19x + 15


Hope this helps :)

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7 0
3 years ago
Please help! Really easy math, need it asap!!! It's in the picture
Dominik [7]

Answer:

answers are: (-1,-2), (1,2), (-1,5), (1,-5). in other words, option 2, 6, 7, and 8.

Step-by-step explanation:

hope it helps

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2 years ago
Consider the equation 2(ax+3)=4x−3(4x+8). For what value of a is there no solution to the equation?
erastovalidia [21]

Answer:

the value of a such that  there is no solution to the equation is a = -4.

Step-by-step explanation:

Let first simplify the expression presented on statement. The equation has no solution if and only if a is eliminated in the process and an absurd is the result (i.e. 0 = 7).

2\cdot (a\cdot x + 3) = 4\cdot x -3\cdot (4\cdot x + 8)

2\cdot a\cdot x +6 = 4\cdot x -12\cdot x -24

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Let prove the certainty of the result. We find that an absurd exist: (a = -4)

0 = -15

5 0
3 years ago
I need help how I resolve this
svlad2 [7]
To help you out I save your picture and explain the process. The only thing tht confuses me is problem #!6. But I hope I helped you out in the slightest bit

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3 years ago
A triangle has side lengths measuring 20 cm, 5 cm, and n cm. Which describes the possible values of n?
DENIUS [597]
The answer is D. 15 < n < 25.
3 0
3 years ago
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