Factorise q² - 10q + 21.
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Answered by
2
Answer:
(q-3)(q-7)
Step-by-step explanation:
q^2 - 10q + 21 => Splitting the middle term method
=> -7 x -3 = 21.
(q^2 - 3q) - (7q + 21) (Sign will change as you multiply)
q(q - 3) - 7(q - 3)
Answer = (q - 7)(q -3)
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