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Question
x2 + 9x + 20 is equal to ______.
Options
(x + 4) (x + 5)
(x + 4) (х – 5)
(x + 2) (x + 10)
(x + 10) (х – 2)
MCQ
Fill in the Blanks
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Solution
x2 + 9x + 20 is equal to (x + 4) (x + 5).
Explanation:
The quadratic expression x2 + 9x + 20 can be factored by finding two numbers that multiply to 20 and add to 9.
These numbers are 4 and 5.
Hence, x2 + 9x + 20 = (x + 4)(x + 5).
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