Evaluate
3\left(a-3b\right)\left(4a-7b\right)
Expand
12a^{2}-57ab+63b^{2}
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12a^{2}-36ab-21ba+63b^{2}
Apply the distributive property by multiplying each term of 4a-7b by each term of 3a-9b.
12a^{2}-57ab+63b^{2}
Combine -36ab and -21ba to get -57ab.
12a^{2}-36ab-21ba+63b^{2}
Apply the distributive property by multiplying each term of 4a-7b by each term of 3a-9b.
12a^{2}-57ab+63b^{2}
Combine -36ab and -21ba to get -57ab.
Examples
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{ x } ^ { 2 } - 4 x - 5 = 0
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\frac { d } { d x } \frac { ( 3 x ^ { 2 } - 2 ) } { ( x - 5 ) }
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Limits
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