Question

19.) (2x + 3y + 4z) (4x2 + 9y2 + 16z2– 6xy – 12yz – 8zx).
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Answer 1

Step-by-step explanation:

(2x) 3+(3y) 3+(4z) 3- 3.2x.3y.4z

= 8x3+27y3+64z3-72xyz

Answer 2

Answer:

2x + 3y+ 4z) {(2x)^2 + (3y)^2 + (4z)^2 - (2x)(3y) - ( 3y)(4z) - ( 4z)(2x)}

: . it is in the form ( x^3 + y^3 + z^3)- 3xyz

: . the answer is ( 2x^3 + 3y^3+ 4z^3) - 3( 2x + 3y + 4z )

Step-by-step explanation:

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