The answer is: " -12x³ + 28x² " .
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Explanation:
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Note the "distributive property of multiplication" :
___________________________________________a(b+c) = ab + ac ;a(b−c) = ab − ac ;___________________________________________
So; given: " - 4x² (3x - 7) " ;
→ - 4x² (3x <span>−</span> 7) ;
= [ -4x² * 3x ] − [- 4x² * -7 ] ;
= -12x³ − (28x²) ;
= -12x³ − 28x² .
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Answer:
22221
Step-by-step explanation:
I set up the problem like this
823
x27
Then I multiplied 7 by 3 and carried over the one and then multiplied 7 by 2 and added one and carried the one over... I then multiplied 7 by 8 and added the one!
Then I put a zero where the 7 I first multiplied would be... I then multiplied 2 by 3 and then multiplied 2 by 2 and finally multiplied 2 by 8!
I then added up the two values! (Sorry this probably sounds confusing!)
Answer: y=20x+15
y=20x+260
Step-by-step explanation:
Answer:
4(3x-y)
Step-by-step explanation:
Given:
To factor this kind of expression, first, find the common factor.
Notice that in the expression, we have both same (3x-y). Therefore, (3x-y) is our factor.
Let u = 3x-y
Change u back to 3x-y:
Therefore, the factored expression is 4(3x-y).
