Directions:Use the product rule to simplify the following monomials. 18.) 19m⁸n⁸ - (4m⁵n)(3m³n⁷)
19.) (-5cd)(-3c⁴d) - (7c²d²)(2c³)

ANYONE PLEASE HELP ME I REALLY NEED THE ANSWER:(​

ca = ec

cpctc makes it so that corresponding parts of the triangle you proved to be equal are equal, the other options aren't part of the part of the triangles you proved to be equal.

beluga wheeeaaalle matt

step-by-step explanation:

let's call the solutions x₁ = (5 - 2√7)/3 and x₂ = (5 + 2√7)/3

then the equation is (x-x₁)(x-x₂) = 0

if you fill that in you get a lot of numbers which you can recognize as ax²+bx+c=0.

step-by-step explanation:

you can see that a=1 (there is just an x²)

b = (-5 -2√7 + 2√7 - 5)/3 = -10/3

c = -2√7)/3 ) * (-5+2√7)/3) = -1/3

so your answer is 3x^2 – 10x – 1 = 0