2 years ago

System of equations!!!

Mathematics

1 answer:

ololo11 [35]2 years ago

5 0

Answer:

Step-by-step explanation:

1. x^2-x-20=3x-15

x=5, x=1 substitute

y=3*5-15 = 0

y=3*(-1)-15 = -18

Solution: (5,0) & (-1,-18)

2. x^2+2x+3=x+5

x=-2, x=1 substitute

y= -2+5 = 3

y=1+5 = 6

Solution: (-2,3) & (1,6)

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Answer:

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Step-by-step explanation:

Let

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2 years ago

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zheka24 [161]

Answer:

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12/3=4

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3 years ago

21x =7?<br> A. x=3<br> B. None of these <br> C. x=147<br> D. x=28

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Step-by-step explanation:

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