binomial formula reverse problem 3:
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find the binomial formula:
144x² – 81y² = ?
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answers:
find the binomial formula:
144x² – 81y²
1. step: which binomial formula?
answer: 3. binomial formula
explanation: two parts and the algebraic sign in the middle is negative.
2. step: radical the first and the third part
radical the first part: √144x² = 12x
radical the third part: √181y² = 10y
3. step: write the 3. binomial formula
(12x – 10y) • (12x + y)