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777dan777 [17]
3 years ago
9

Factor completely. x2+4x−21

Mathematics
1 answer:
BartSMP [9]3 years ago
4 0
X2 + 4x - 21

Answer: (x + 7)(x - 3)
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Add 15 to x to find y
Arturiano [62]

Answer:

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Step-by-step explanation:

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Find the measure of an exterior angle of a decagon
Aleonysh [2.5K]

Answer:

add all then sides then multiple it with how many sides you have

Step-by-step explanation:

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4 0
3 years ago
12a - 6 + 7a - 2a ; a = 4<br> Need help please
Novosadov [1.4K]

Answer:

62

Step-by-step explanation:

Plug in the value of a in the equation:

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Solve 7(4) - 2(4):

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Combine both answers (42+20):

42+20 = 62

Complete answer:

12(4) - 6 + 7(4) - 2(4) = 62

3 0
3 years ago
How do you solve this ? what do you do with the exponets ?
antiseptic1488 [7]
4/7 is the answer. 

I cant reall explain becuase it will take forever xD
6 0
3 years ago
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