it's 4.25 because you add everything together
1.convert .5 to eighths 1/2 to 4/8
2. add all the top numbers 7 + 7 +4 =18
3. 18/8 = 2 2/8 + 1 + 1 = 4 2/8 or 4.25
if you still don't get it then message me and i'll try to explain it better
Step-by-step explanation:
(4^3)^5 = 4^(3×5) = 4^15 (option C)
43.51. You take away the 18.64 from the 62.15
Answer:
Step-by-step explanation:
x²+4xy+4y²-8x-16y-20=(x+2y)²-8(x+2y)-20
put x+y=t
t²-8t-20=t²-10t+2t-20=t(t-10)+2(t-10)=(t-10)(t+2)
substitute the value of t
x²-4xy+4y²-8x-16y-20=(x+2y-10)(x+2y+2)
i don't know what else you want.