How do you work out a sequence by having the nth term

see explanation

Step-by-step explanation:

given = 8 - n

To calculate the first 3 terms substitute n = 1, 2, 3 into the formula

= 8 - 1 = 7

= 8 - 2 = 6

= 8 - 3 = 5

the first 3 terms are 7, 6, 5

the first negative value will occur when n > 8, that is 9

= 8 - 9 = - 1 ← first negative term

your answer is -9

step-by-step explanation:

the polynomial is a perfect square trinomial of the form a^2-2ab+b^2:

option a. true

step-by-step explanation:

9x^2-12x+4

comparing with the form a^2-2ab+b^2

1.) a^2=9x^2

solving for a: square root both sides of the equation:

sqrt(a^2)=sqrt(9x^2)

a=sqrt(9) sqrt(x^2)

a=3x

2.) b^2=4

solving for b: square root both sides of the equation:

sqrt(b^2)=sqrt(4)

b=2

to be a perfet square trinomial 2ab must be equal to 12x. let's check:

2ab = 2 (3x) (2)

2ab = 12x

correct