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Does each of the following result in X^2– 100? A (x-90) + (x - 10) B (x - 9)^2 – 19 C x(x – 100) D (x + 10)(x - 10)
Ashwani Tiwari
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Mar 6, 2022
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Does each of the following result in
X^2– 100?
A (x-90) + (x - 10)
B (x - 9)^2 – 19
C x(x – 100)
D (x + 10)(x - 10)
Mathematics
high-school
Ashwani Tiwari
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Mar 6, 2022
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Ashwani Tiwari
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Answer :
D - (x+10)(x-10)
Solution:
x^2 -100
= x^2 - 10^2
= (x+10)(x-10) { a^2 -b^2 = (a+b)(a-b)
Bwerks
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Mar 13, 2022
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Bwerks
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