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The answer is 96 words.
He can type 32 words every 30 seconds, 64 words for 60 seconds or 1 minute and 96 words for 90 seconds.
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49–2ax –a^2–x^2
Extract the negative sign
= 49 - (a^2 +2ax +x^2)
Factor using a^2 + 2ab + b^2 = (a+b)^2
= 49 - (a+x)^2
Factor using a^2 - b^2 = (a-b)(a+b)
= ( 7- (a + x)) * (7 + (a + x))
= ( 7- a - x) * (7 + a + x)
The answer is B.
14 + 15x
14 + 15(5)
14 + 75
89
Answer:
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Step-by-step explanation:
