solve the following equation for |x^2-9|+|x^2-4|=5
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Answer:
x = 4.5
Step-by-step explanation:
|x^2-9| + |x^2-4| = 5
=> 2x - 9 + 2x - 4 = 5
=> ( 2x + 2x ) + { (-9) + (-4) } = 5
=> 4x + (-13) = 5
=> 4x - 13 = 5
=> 4x = 5 + 13 = 18
=> x = 18/4 = 4.5
Verification:-
=> |x^2-9| + |x^2-4| = 5
=> | 4.5^2 - 9 | + | 4.5^2 - 4| = 5
=> | 9-9 | + | 9-4 | = 5
=> 0 + 5 = 5
=> 5 = 5
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