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(7z - a )(3z+2a)?

2007-02-28 03:05:40 · 2 answers · asked by Eric B 1 in Science & Mathematics ➔ Mathematics

2 answers

21z^2-3az+14az-2a^2
=21z^2 +11az -2a^2

2007-02-28 03:10:23 · answer #1 · answered by Maths Rocks 4 · 0⤊ 1⤋

I did it this way:
7z(3z+2a) -a(3z+2a)
21z^2 + 14za -3za-2a^2
21z^2 +11za - 2a^2

2007-02-28 12:06:05 · answer #2 · answered by soulfullofdarkness 1 · 0⤊ 0⤋

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