Step-by-step explanation:
3x²+10x+8 = 3x²+6x+4x+8
= 3x(x+2)+4(x+2)
= (3x+4)(x+2)
Answer:
It is always positive because the discriminant is negative and therefore has no roots. This can also be interperted as the equation will always be above the x-axis on the parabola and therefore always be positive.
Step-by-step explanation:
I'll help but information is missing, you need to have the cost and the number of pencil she will buy
I am not going to do the work for you, since this easy with this information:
Quadratic- involving the second and no higher power of an unknown quantity or variable
Linear- Arranged in straight or almost straight line
Exponential- Increasing
No, its extra information