Question

[tex]12x + 3x^{2} - 5x + 4 -7x^{2}

Answer 1

Answer:

Here is Ans.

Step-by-step explanation:

(a)f(x) =x2+ 5x

(b)g(x) =x2+ 4x−3x=−(4)±√(4)2−4(1)(−3)2(1)=−4±√16 + 122= −4±√282= −42±√7·222= −2±2√72= −2±√7≈ 0.64575,−4.64575

Thus, the roots of g occur at x≈0.64575 and x≈−4.64575.6

(c) k(x) = 10x2−8x−21

(d) m(x) = 12x−2−3x2

,=25

Answer 2

12x + 3x² - 5x + 4 - 7x²

(3x² - 7x²) + (12x - 5x) + 4 ( The numbers are neatly arranged )

( - 4x² ) + ( 7x ) + 4

and that's why here ,

- 4x²+ 7x + 4

I hope this will be help you