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AleksandrR [38]
3 years ago
10

Write in standard form (×+4)(×-5)=4 find the value of a,b,c​

Mathematics
1 answer:
Alex17521 [72]3 years ago
4 0

Answer:

x^{2} - x - 24 = 0

a = 1

b = 1

c = -24

Step-by-step explanation:

(x + 4)(x - 5) = 4

x(x - 5) = x^{2} - 5x

4(x - 5) = 4x - 20

x^{2} - 5x + 4x - 20 = 4

x^{2} - x - 20 = 4

x^{2} - x - 20 - 4 = 0

x^{2} - x - 24 = 0

a = 1

b = 1

c = -24

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Answer:

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Step-by-step explanation:

Let that number be x. We can build an equation, and solve for x.

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We are given that the two quantities are equal, so we have that x/2-4=x+2.

Adding 4 to both sides gives x/2=x+6.

Multiplying both sides by 2 gives x=2(x+6)=2x+12.

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So, the number is \boxed{-12} and we're done!

The check is left as an exercise to the reader.

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