Factor completely: 27x2−75y2 question 1 options: −3(−27x2−25y2) −3(3x+5y)2 3(3x−5y)2 3(3x+5y)(3x−5y)

3(3x-5y) (3x+5y)

Step-by-step explanation:

27x^2−75y^2

Factor out a 3

3(9x^2 -25y^2)

This is the difference of squares

a^2 -b^2 = (a-b) (a+b)

a^2 = 9x^2  so a =3x

b^2 = 25y^2 =5y

3(9x^2 -25y^2) = 3(3x-5y) (3x+5y)

answer: 10 turtles

step-by-step explanation: as turtles have four legs so 4.10=40 therefore birds are 4 which sue counted