Solving Two-Step Equations Quiz Active TIME 5 2 Which equations have the same value of x as X+5=-9? Select three options. -9 X+ 3--9(6) 5x+4=-54 5x+4=-9 5x=-13 5x=-58 Next Save and Exit Sub Mark this and return M​

answer:

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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

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so the answer is 1.80