Question

if a=4x³+7x-3, b= -8x³+7 & c = 3x³-5x+2, find the value of a+b+c when x=1
please write in method
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Answer 1

answer:-

7

Given:-

a=4x³+7x-3;

b= -8x³+7

c=3x²-5x+2

x=1,

To Find :-

a+b+c; when (x=1)

Step by Step explaination:-

To make it simple, lets first add all given values of "a,b,c".

Here,

=> a+b+c = 4x³+7x-3-8x³+7+3x³-5x+2

=>a+b+c= -x³+2x+6

now for the given Equation, we put x=1, to find the value of given value at x=1.

=> a+b+c= -(1)³+2(1)+6

=>a+b+c= -1+2+6

=>a+b+c=7

So,the values of given equations, a+b+c at x=1 is 7.

Ans.