Resolve into factors (a+b) ^2-(x+y)^2

Step-by-step explanation:

(a+b) ^2-(x+y)^2

((a+b)-(x+y))((a+b)+(x+y))

=(a+b-x-y)(a+b+x+y)

what the- this confuses me so imma pass

my answer is$ 12

step-by-step explanation:

because 15 -2=12

answer: 10 turtles

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