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LuckyWell [14K]
3 years ago
10

Factorising quadratics X squared + 5x -6 X squared - 2x15 X squared -7x +12

Mathematics
1 answer:
34kurt3 years ago
5 0

Answer:

  • (x -1)(x +6)
  • (x -5)(x +3)
  • (x -4)(x -3)

Step-by-step explanation:

In each case, you're looking for divisors of the constant that have a sum equal to the x-coefficient. Those divisors are the constants in the binomial factors.

1) -6 = -1·6 = -2·3 . . . . . (-1)+(6) = 5, so these are the constants of interest.

  x^2 +5x -6 = (x -1)(x +6)

__

2) -15 = -1·15 = -3·5 = -5·3 . . . . . (-5)+(3) = -2, so these are the constants of interest

  x^2 -2x -15 = (x -5)(x +3)

__

3) 12 = -1·-12 = -2·-6 = -3·-4 . . . . . (-3) +(-4) = -7, so these are the constants of interest

  x^2 -7x +12 = (x -3)(x -4)

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Setler79 [48]

Ben drinks 3 1/2 liters of tea every 40 minutes.

This means that he would drink 1 3/4 of tea every 20 minutes (divide both sides by 2).

Now, let's multiply each side by 3.  

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8 0
3 years ago
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I need help find the coordinates
stellarik [79]

2×2=4

4÷2=2

4+2=6

4+2+6=12

we know that,

put a number you like anything I will write x°

x°+12°=90°

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78°-12°=66°,,

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60

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4 years ago
Mara's family is driving to her grandmothers' house. The family travels 239.4 miles be-
creativ13 [48]

Answer:

Give brainliest please! The answer is 53.2 mph

Step-by-step explanation:

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1:40 p.m. is 13:40.

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that is  hours.

Use formula:

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In your case,

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7 0
3 years ago
In 1 minute alex can type 44 words at the same rate how long would it take him to type 176 words
motikmotik

Answer: 4 minutes

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AleksandrR [38]

Answer:

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Step-by-step explanation:

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we got 1.05 because the formula says that y = a( 1 + r ) power t

for a we will give it 1

so y = 1 ( 1 + 0.05) power t

it will give us 1.05

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5 0
2 years ago
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