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klio [65]
3 years ago
11

Find the product. (2x+3)(2x-3) A. 4x2 - 9 B. 4x2 +9 C. 4x2 –5x+9 D. 4x2 - 5x-9

Mathematics
1 answer:
Mademuasel [1]3 years ago
6 0

Answer:

A. 4x^2 - 9

Step-by-step explanation:

2x * 2x = <u>4x^2</u>

2x * -3 = <u>-6x</u>

3 * 2x = 6x

-3 * 3 = -9

-6x + 6x  = 0, so we're left with 4x^2 - 9

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Answer:

Otieno's age in 4 years: k+4

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Step-by-step explanation:

k = Otieno's age

k-5 = Kidole's age

Their ages will increase by 4 years when 4 years pass.

k+4 = Otieno's age in 4 years

k-5+4 = Kidole's age in 4 years

k-1 = Kidole's age in 4 years (after simplifying the expression)

I hope this helps!

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tiny-mole [99]
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Step-by-step explanation:

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Answer:

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