(3x³-7y)²
A)3x⁶-42x³y+49y²
B)3x⁹-21x³y+49y²
C)9x⁶-42xy+49y²
D)9x⁶-42xy+49y²
E)9x⁹+42x³y+49y²
A)3x⁶-42x³y+49y²
B)3x⁹-21x³y+49y²
C)9x⁶-42xy+49y²
D)9x⁶-42xy+49y²
E)9x⁹+42x³y+49y²
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Verified answer
Respuesta:
(3x³-7y)²= (3x³)²-2(3x³)(7y)+(7y)²=
= 9x⁶- 42 x³y + 49 y²