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3 years ago

What two numbers can be multiplied to get positive 48 and added to get -14?

Mathematics

2 answers:

murzikaleks [220]3 years ago

5 0

Answer
-8 and -6

multiplied : -6 x -8 = 48
added: -6 + (-8) = -14

Artist 52 [7]3 years ago

3 0

A * b = 48
a + b = -14....a = -14 - b

b(-14 - b) = 48
-b^2 - 14b = 48
b^2 + 14b + 48 = 0
(b + 6)(b + 8) = 0

b + 6 = 0
b = -6

b + 8 = 0
b = -8

so ur 2 numbers are : -6 and -8

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See attached

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When there is a lot of repetitive calculation to do, I like to let a spreadsheet or graphing calculator do it. The attached shows a spreadsheet that computes all the values you're asked to find.

For a linear equation in standard form, ax +by = c

the x-intercept is: c/a
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___

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_____

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