Evaluate the polynomial for x=3 and x=-3
the value of -6x+8= - when x is -3
the value of 6x+8= - when x is 3
where do you get stuck?
-6(-3)+8 = 18+8 = ?
Would that evaluation be -18 instead of 18. could you please do both examples so I want get confused
To evaluate a polynomial for a specific value of x, you need to substitute that value into the polynomial expression and simplify the resulting expression. Let's evaluate the given polynomials for x=3 and x=-3 step by step.
1. Polynomial: -6x+8.
a) For x = -3:
Replace x with -3 in the polynomial expression:
-6(-3) + 8
(Multiplying -6 by -3)
18 + 8
(Adding 18 and 8)
26
Therefore, when x is -3, the value of -6x+8 is 26.
b) For x = 3:
Replace x with 3 in the polynomial expression:
-6(3) + 8
(Multiplying -6 by 3)
-18 + 8
(Subtracting 18 from 8)
-10
Therefore, when x is 3, the value of -6x+8 is -10.
2. Polynomial: 6x+8.
a) For x = -3:
Replace x with -3 in the polynomial expression:
6(-3) + 8
(Multiplying 6 by -3)
-18 + 8
(Subtracting 18 from 8)
-10
Therefore, when x is -3, the value of 6x+8 is -10.
b) For x = 3:
Replace x with 3 in the polynomial expression:
6(3) + 8
(Multiplying 6 by 3)
18 + 8
(Adding 18 and 8)
26
Therefore, when x is 3, the value of 6x+8 is 26.
I hope this explanation helps! If you have any further questions, feel free to ask.