Algebra 2 help, 2 factor problems?
1. 30xsquared+4x+16, i cant figure this one out, do I use slide and divide or what? please show work :)
2. m^4-16???? would it just be (m^2+4)(m^2-4) or is that wrong?
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1. 30xsquared+4x+16, i cant figure this one out, do I use slide and divide or what? please show work :)
2. m^4-16???? would it just be (m^2+4)(m^2-4) or is that wrong?
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Answers & Comments
greatest common factor is 2
30x^2 + 4x + 16 =
2(15x^2 + 2x + 8)
difference of two squares
m^4 - 16 =
(m^2 + 4)(m^2 - 4) = there is another difference of two squares
(m^2 + 4)(m + 2)(m - 2)
For problem (1) which has complex roots, visit http://www.mathsisfun.com/quadratic-equation-solve...
(2) m^4 - 16
= (m²)² - 4²
= (m² - 4) (m² + 4)
= (m² - 2²) (m² + 4)
=(m - 2) (m + 2) (m² + 4)