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OpenStudy (anonymous):
Factor the trinomial completely: 196x^4+168x^3+20x^2
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OpenStudy (anonymous):
\[196x^4+168x^3+20x^2=4x^2(49x^2+42x+5)=4x^2(7(7x^2+6x)+5)\]
OpenStudy (anonymous):
factorise x^2 first.. then---->x^2(196x^2+168x+20) will be easier to simplify.. ans: --->x^2(7x+1)(7x+5).... got it????
OpenStudy (anonymous):
\[196x^4+168x^3+20x^2\]\[=4x^2(49x^2+42x+5)\] \[=4x^2(7x+1)(7x+5)\]
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