Answer:
the answer is 62.8cm^2
Step-by-step explanation:
4•3.14•5
You can round 396 to 400 and 71 to 70. then you just multiply them and get 28,000. :))
Rewrite it in the form a^2 - b^2, where a = x and b = 5
x^2 - 5^2
Use the Difference of Squares: a^2 - b^2 = (a + b)(a - b)
<u>= (x + 5)(x - 5)</u>
If it’s above 5 it goes up if 4 or below goes down
15)
4(a+b) + 12
= 4a + 4b + 12
= 4(a +b + 3)
answer is
b) 4(a +b + 3)
16)
x - 4(2x + 2)
= x - 8x - 8
= -7x - 8
answer
-7x - 8
