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This always involves a little trial and error for me. Here's what we know. There's going to be two brackets. The first terms in the brackets will be a factor pair of 35. (35,1 or 7,5) We'll have one plus and one minus. The second numbers will be a factor pair of 99. (99,1 or 33,3 or 11,9) Those will all combine to make +32, which means the plus total will be greater than the minus total. Set up your brackets.

(5a +/- ?)(7a +/- ?) Then I try combinations until I find one that works.

(5a + 11)(7a - 9)

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11y ago
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12y ago

25a2-70a+49 = (5x-7)(5x-7) when factored

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12y ago

7(c - 5)(c - 2)

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Q: How do you factorize 35a2 plus 32a-99?
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