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54x^{2}+15x-21
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54x^{2}+15x-21
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54x^{2}-27x+42x-21
Apply the distributive property by multiplying each term of 9x+7 by each term of 6x-3.
54x^{2}+15x-21
Combine -27x and 42x to get 15x.
54x^{2}-27x+42x-21
Apply the distributive property by multiplying each term of 9x+7 by each term of 6x-3.
54x^{2}+15x-21
Combine -27x and 42x to get 15x.
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