Question

Evaluate 4x^2-12x+5 at x=6. A. 67 B. 77 C. 105 D. 221

Please hurry, I am giving 50 points! I only have a limited time to answer it!!!

Answer 1

`\\ \sf\longmapsto 4x^2-12x+5`

`\\ \sf\longmapsto 4(6)^2-12(6)+5`

`\\ \sf\longmapsto 4(36)-72+5`

`\\ \sf\longmapsto 144-67`

`\\ \sf\longmapsto 77`

Answer 2

Answer: B. 77

Sub x =6 into the given expression

4x^2 - 12x + 5

= 4(6)^2 - 12(6) + 5

= 144 - 72 + 5

= 77