13. Find the value of x. o(6 + x9) (6x – 40) (3x + 15)°
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Answer:
-19+162x
Step-by-step explanation:
(6+9x)(6x-40)(3x+15)
= 6+9x*6x-40*3x+15
= 6+15-40+9x*6x*3x
= -19+162x
* is the sign for multiplication
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