Which polynomial is in standard form? a) 5x6 − 6x8 + 7x9 + 9 b) x2 + 2x3 − 3x4 + 3x5 c) 3x3 − 5x2 + 7x4 + 9x3 d) 2x5 − 6x3 + 3x2 − x

choice D

2x^5 - 6x^3 + 3x^2 - x

Explanation:

Polynomials in standard form always have the exponents decrease (ie go from largest to smallest) when we read from left to right. For choice D, the exponents from left to right are: 5, 3, 2, 1. This is decreasing order. The other answer choices do not have the exponents in decreasing order. The degree of the polynomial in choice D is a 5th degree polynomial since 5 is the largest exponent.

noncoplanar points are points that do not lie on the same line.

the image is given below

since the options are not given so we draw it from the equation

the given equation is

y = (x-1) (x+4)

y = y² + 3x - 4

the above equation is a quadratic equation which will have two roots. if we draw the graph for it, it will look like this