Does (40,0) make the equation y=0 true?

Use the substitution method for y=0

(40,0)

y=0

0=0

(40,0)  It does make the equation y=0 true

Yes

Step-by-step explanation:

The y-coordinate is 0, therefore it is authentic.

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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