Agarden store sells plants in flats. there are 6 plants in each tray. each flat has 6 trays. the garden store sold 18 flats on saturday and 21 flats on sunday. how many plants did the garden store sell in all?

6*6=36 plants per flat.

18*36+21*36= number of plants.

648+756=1404 plants

Step-by-step explanation:

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step-by-step explanation:

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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