If x=-7, find the value of x^3+21x^2+147x+343
tdmalleswari2016:
0 is the answer
(-7^3) +21*(-7^2) +147*(-7) +343 = {-343+1029-1029} = 0 i wish this will help you
plss solve and then post!!
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Answered by
0
Answer:
0
Step-by-step explanation:
(-7)^3 + 21(-7)^2 + 147(-7) + 343 <--WE ARE SUBSTITUTING X IN EQUATION
-343 + 1029 + -1029 + 343 <--WE OPENED BRACKETS
= 0 <--ADDED AND SUBTRACTED VALUES
Answered by
1
Answer:
the value of x^3+21x^2+147x+343 is zero(0).
Step-by-step explanation:
I hope it's helpful for you
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