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Slav-nsk [51]
3 years ago
13

Factor completely. 28 – 7x2

Mathematics
1 answer:
coldgirl [10]3 years ago
5 0

Answer:

7(2+x)(2-x)

Step-by-step explanation:

Both terms are perfect squares,use the difference of square formulas

a^2-b^2=(a+b)(a-b) where a=2 and b=x

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2+266666662724683745946198753278313=
LUCKY_DIMON [66]

Answer:

2.6666666e+32

Step-by-step explanation:

1.add

2.multiply

3. you have your answer

6 0
3 years ago
Solve for<br> 20 = 5(x + 1)<br> X =
Nataly [62]

Answer:

x = 3

Step-by-step explanation:

5(x+1) = 20

x+1 = 20/5

or, x+1 = 4

or, x = 4-1

so, x = 3

6 0
3 years ago
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Select the factors of x2 - 14x + 49
marissa [1.9K]
(X-7)(x-7)
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6 0
3 years ago
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Please help me quickly -5 - 6a = -59
MAXImum [283]

Answer:

a=9

Step-by-step explanation:

8 0
3 years ago
Find the value of x for which the lines a and b are parallel.
siniylev [52]

Answer:

x = 19

Step-by-step explanation:

148 and 7x+15 are alternate interior angles and alternate interior angles are equal when the lines are parallel

148 = 7x+15

Subtract 15 from each side

148-15 = 7x+15-15

133 =7x

Divide each side by 7

133/7 =7x/7

19=x

4 0
3 years ago
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