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larisa86 [58]
2 years ago
5

Which expressions have a sum of -12 right answer only!!

Mathematics
2 answers:
kenny6666 [7]2 years ago
7 0

Answer:

B and D

Step-by-step explanation:

2+-14 = -12

-4+(- 8) = -12

because its a negative number it wont go up it will go down

Stells [14]2 years ago
5 0

Answer:

a) -  13 +  - 1 =  =  - 13 - 1 =  - 14 \\ b)2 + - 1 4 = 2 - 14 =  - 12 \\ c) - 5 + 17 =  12 \\ d) - 4 +  - 8 =  - 12 \\ b \: and \: d \: represent \:  - 12as \: answer \\ thankyou

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Read 2 more answers
One root of the equation x2+6x+q=0 is twice the other root. find q and the roots.
Whitepunk [10]
Suppose one of the roots is a the second is 2a. The factors will be:
(x-a) and (x-2a)
thus
(x-a)(x-2a)=x^2+6x+q
x^2-xa-2ax+2a^2=x^2+6x+q
taking corresponding terms we shall have:
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solving for a we get
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thus
a=-3
but
q=2a^2
substituting the value of a we get:
q=2(-3)^2
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