find the value of a if x+6 is a factor of x^3+3x^3+4x+a
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Step-by-step explanation:
If x+6 is a factor
x+6=0
then x= -6.
Now placing it in place of x
(-6)³+3(-6)³+4(-6)+a = 0
-216-648-24+a =0
-888+a =0
a= 888 is the answer.
Remember
- Use BODMAS
- Brackets of Division Multiplication Addition Subtraction
- Convert the value of x
- In odd powers result will be negative
- In even it will change
- Remember to change signs if required.
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