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Answer :
Answer:
The correct option is A) [tex]3x^3+3x^2-30x-48[/tex]
Step-by-step explanation:
Consider the provided expression.
[tex]3\left(x+2\right)\left(x^2-x-8\right)[/tex]
Distribute 3 as shown
[tex]\left(3x+6\right)\left(x^2-x-8\right)[/tex]
Distribute parentheses as shown.
[tex]3xx^2+3x\left(-x\right)+3x\left(-8\right)+6x^2+6\left(-x\right)+6\left(-8\right)[/tex]
[tex]3x^2x-3xx-3\cdot \:8x+6x^2-6x-6\cdot \:8[/tex]
[tex]3x^3-3x^2-24x+6x^2-6x-48[/tex]
Add and subtract like terms
[tex]3x^3+3x^2-30x-48[/tex]
Hence, the correct option is A) [tex]3x^3+3x^2-30x-48[/tex]
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Answer:
3x^3 + 3x^2 − 30x − 48
Step-by-step explanation:
3( x + 2 )( x^2 − x − 8 )
= ( 3( x + 2 ))( x^2 + − x + − 8 )
= ( 3( x + 2 ))( x^2 ) + ( 3( x + 2 ))( −x ) + ( 3( x + 2 ))( −8 )
= 3x^3 + 6x^2 − 3x^2 − 6x − 24x − 48
3x^3 + 3x^2 − 30x − 48
