45bb+150bd+125dd
Steps:
1. Factor out common terms
45bb+150bd+125dd
5(9bb+30bd+25dd)
2. Multiply coefficients of first and third terms:
9*25=225
3. Factor product of first and third terms, choose factors whose sum is the second term(30):
225=3*3*5*5
=3*75
=5*45
=15*15
4. Rewrite polynomial:
5(9bb+30bd+25dd)
5(9bb+15bd+15bd+25dd)
5. Factor sets of terms (first and second, third and fourth):
5(9bb+15bd+15bd+25dd)
5(3b(3b+5d)+5d(3b+5d)
6. Combine like terms:
5(3b+5d)(3b+5d)
7. Combine like terms:
5(3b+5d)**2
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