B. Evaluate the following algebraic expressions for the given value of x
1.2x—7 where x=4
Solution:
2.4x—8/3x+4 where x=—1
Solution:
3.x²—6x+5 where x=—3
Solution:
1. 2x-7
"\\Rightarrow \\text{ At } x=4 \\Rightarrow 2(4)-7=8-7=1"
"2. 4x-\\dfrac{8}{3}x+4"
at x=-1,
"4(-1)-\\dfrac{8}{3}(-1)+4=\\dfrac{8}{3}"
3."x^2-6x+5"
at x=-3,
"(-3)^2-6(-3)+5\n\n =9+18+5=32"
Comments
Leave a comment