Question
Download Solution PDFSimplify: 3(9x3 - 6x2 + 30) -9(3x3 - 2x + 30)
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDFGiven:
f(x) = 3(9x3 - 6x2 + 30) -9(3x3 - 2x + 30)
Calculations:
⇒ 3(9x3 - 6x2 + 30) -9(3x3 - 2x + 30)
⇒ 27x3 - 18x2 + 90 - 27x3 +18x - 270
⇒ - 18x2 +18x + 90 - 270
⇒ - 18x2 +18x - 180
⇒ -18 (x2 -x+10).
Hence, 3(9x3 - 6x2 + 30) -9(3x3 - 2x + 30) is equal to -18 (x2 -x+10).
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