What is the of the polynomial?(5X^3+4x^2)-(6x^2-2X-9)

I hope it good for you.

(x+1) x (5x^2 - 7x +9 )

11.2

step-by-step explanation:

when doing tangent the tangent of the angle is equal to the opposite side from the angle over the adjacent side to the angle.

tan43 = x / 12

move 12 over by multiplying each side by 12

12tan43 = x

x = about 11.2

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