2 Which of the following polynomials is not written in standard form? (1) 6x2 – 3x + 5
(2) 9x2 - 8
(3) 2x + 3x2 + 7
4) 9x3 + 7x2 - 5x

3

Step-by-step explanation:

Standard form is written in the order of the exponent on a variable from highest to lowest.

#1 exponents go 2, 1 , then zero. So, this is standard form.

#2 exponents go 2 then zero, so this is standard form.

#3 exponents go 1 then 2 then zero, so this is not in standard form.

#4 exponents go 3 to 2 to 1, so this is still in standard form.

hope this helps!

x+y=90

x=30-y=x

step-by-step explanation:

if you understand you will get the answer

step-by-step explanation:

it's is b