Answer:
it is a quadratic equation
Step-by-step explanation:
3x(3x+7) +2(3x+7)
9x square +21x +6x+14
= 9x square +27x +14
P = s + (s + 5) + (s + 5) This represents the two sides that are 5 inches longer than the base (s + 5) and the base (s).
Simplifying.
100 = 3s + 10
subtract 10 from both sides
90 = 3s
divide both sides by 3
30 = s
base = 30
sides = 35
CHECK 30 + 35 + 35 = 100
As you know 30/45 = 6/9
So a = 9 makes the equation true
Yes.
When you use distributive property in first expression you’ll get 4x +8y. The second expression just rearranged those two terms.