6th grade miscellaneous problem?
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In Trignometry ,Misc algebra try to learn slowly but make your concepts rock solid . Do not be in a haste . Spend ample time on derivations of each and every formula ,analyse results deeply . Once you are able to derive each and every formula ,visualise results you should start solving questions .
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Factorize: x(2x + 5) – 3
Solution:
Given expression = x(2x + 5) – 3
= 2x2 + 5x – 3
= 2x2 + 6x – x – 3,
[Since, 2(-3) = - 6 = 6 × (-1), and 6 + (-1) = 5]
= 2x(x + 3) – 1(x + 3)
= (x + 3)(2x – 1).
Step-by-step explanation:
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