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Alborosie
3 years ago
5

How can you find the answer of 15 only using the numbee 4

Mathematics
2 answers:
Kryger [21]3 years ago
8 0
(4 x 4) - (4/4)
= 16 - 1
= 15
maw [93]3 years ago
3 0
4+4*4=27 that's the best way to do it
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Step(1)

To find q(a) we just need to put a instead of x in q(x) function.

Let's do it...

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Multiply sides by -2 :

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Step (2)

To find q(a+1) we just need to put a+1 instead of x in q(x) function.

Let's do it...

q(a + 1) =  ({a + 1})^{2} + 3(a + 1) + 4 \\

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Step (3)

q(a + 1) - 2q(a) =

{a}^{2} + 5a + 8 - 2 {a}^{2} - 6a - 8 =  \\

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And we're done.

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