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ElenaW [278]
3 years ago
12

A^2+5a-24=0 solve the equation by factoring

Mathematics
2 answers:
TiliK225 [7]3 years ago
6 0
According to his answer above, the factor is (a+8)(a-3). To solve for a, we could see what can give 0 when we multiply the factor. In (a-3), 3 can be subtracted by 3 which is 0, then is being multiplied by another factor, which is still 0. So let's plug 3 as a in our equation. 3^2+5(3)-24=0 is 9+15-24. Simplify. 9+15-24 is 0, so 3 can be an answer to our equation. Now let's see what can we add in (a+8) to get 0. That is -8, because -8+8=0. Now let's try in our equation. -8^2+5(8)-24 is 64+40-24. Simplify. 84-24 which is 60. So -8 can not be a possibility. Therefore 3 is the only answer.

Real answer: a=3
OLga [1]3 years ago
4 0
(a + 8)(a - 3)
You should think about what numbers multiply together to give -24 but add together to give you +5. 
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Adding to "undo" subtraction and subtracting to "undo" addition are both examples of using inverse operations to solve equations
Andrews [41]

Answer:

see below

Step-by-step explanation:

Multiplication and division are also inverse operations

15 * 10 = 150

150 ÷10 = 15

Divide 150 by 10 and we get 15 back

The division undoes the multiplication

This also works in reverse

150 ÷ 10 = 15

15*10 =150

The multiplication undoes the division

5 0
3 years ago
Mimi uses a 7.5-gal bucket to fill a wading pool. She pours 12 buckets full of water into the pool, which can hold up to 138 gal
Diano4ka-milaya [45]

Answer: 6 full buckets.

Step-by-step explanation:

138(pool)/7.5(a bucket)=18.4

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7 0
3 years ago
Factorize that x^4+4y^4​
ipn [44]

Answer:

  • (x² + 2y² + 2xy)(x² + 2y² - 2xy)

Step-by-step explanation:

<h3>Given binomial:</h3>

x⁴ + 4y⁴

In order to factorize it, follow the steps:

<h3>Complete the square:</h3>

  • x⁴ + 4y⁴ =
  • (x²)² + 2*(x²)*(2y²) + (2y²)² - 2*(x²)*(2y²) =
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Used identities:

  • (a + b)² = a² + 2ab + b²
  • a² - b² = (a + b)(a - b)
4 0
2 years ago
5.346 - 2.289= 3.057 <br><br> SHOW WORK!!!! <br><br> WILL GIVE BRAINLIEST PLEASE
Ilya [14]
brainly.com/question/13983892
5 0
3 years ago
Han's house is 450 meters from school. Lin's house is 135 meters closer to school. how far is Lin's house from school
Alenkinab [10]

Answer:

Lins house is 315 metres from school

Step-by-step explanation:

It's simple, just do 450-135.

3 0
4 years ago
Read 2 more answers
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