Question 4 of 5 Page Question 4 (4 points)
(06.07 MC)
Four expressions are shown:
A. 10x + 6
B. 12x + 4
C.2/5x+3)
D. 2(6x + 2)
Which two expressions are equivalent to 2/5x+ 2 + x)? (1 point)
A and C
Оа
Ob
Band D
A and D
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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

30.5*10=350$

you have to multiply the number without the decimal point then add it later but if its tenn u must move the place value of the decimal point 1 to the right.

the median is   36 orr sum like dat

step-by-step explanation: