binomial formula reverse problem 1:
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find the binomial formula:
49x² + 70xy + 25y² = ?
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answers:
find the binomial formula:
49x² + 70xy + 25y²
1. step: which binomial formula?
answer: 1. binomial formula
explanation: three parts and the algebric sign in the middle is positiv.
2. step: radical the first and the third part
radical the first part: √49x² = 7x
from the middle part we only take the algebraic sign: +
radical the third part: √25y² = 5y
3. step: write the 1. binomial formula
e.g. (7x + 5y)²