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I need these two examples explained and worked. Any help will greatly appreciated :D
Perform the indicated operation

(-3a3b)2

2 – 3x(2x – 9)

2007-02-22 12:59:47 · 3 answers · asked by salarian2001 2 in Education & Reference ➔ Homework Help

1] (-3a.3b)2
=(-3a.3b)(-3a.3b)
=(-9ab)(-9ab)
=81a2b2

2] 2-3x(2x-9)
=2-6x+27x
=21x+2

2007-02-22 13:13:59 · answer #1 · answered by kandy 2 · 0⤊ 0⤋

(-3a3b)2
(-9ab)2
-18ab

2-3x(2x-9)
2 - 6x^2 + 27x
-6x^2 +27x + 2

2007-02-22 21:09:52 · answer #2 · answered by HSMathTeacher 3 · 0⤊ 1⤋

(-3a3b )2
= (-9ab)2
= -18ab

2 - 3x(2x - 8)
= 2 - (6x^2 - 24x)
= 2 - 6x^2 + 24x
= -6x^2 + 24x + 2

2007-02-22 21:05:45 · answer #3 · answered by nondescript 7 · 0⤊ 1⤋