What could Dave have written as the result from Step 1
11?
1
3
(
x
+
4
)
2
=
48
Step
1
x
+
4
=
±
12
Step
2
x
=
−
16
or
x
=
8
Step
3

3
1
​
(x+4)
2

x+4
x=−16
​

=48
=±12
or x=8
​

Step 1
Step 2
Step 3
​

10 b/c 5*2 =10

step-by-step explanation:

hello from mrbilldoesmath!

answer:

(7 x + 6 y) (49 x^2 - 42 x y + 36 y^2)

discussion:

the trick is to recognize that 343 = 7^3 and 216 = 6^3 and, in general,

a^3 + b^3 =   (a + b) (a^2 - a b + b^2).

in our case

343x^3+216y^3   =   (7x)^3 + (6y)^3

so take a = 7x and b = 6y in the above equation to get the answer.

you,

mrb

20

step-by-step explanation:

assuming you meant there are 24 pounds of apples in each case, if this is not what you meant, correct me so i can you further