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Solve for 'a' 2a³+ 3a² - …

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Solve for 'a' 2a³+ 3a² - 90a= 0

    • Posted by Rohan Giri 7 years, 8 months ago

    CBSE > Class 12 > Mathematics
    • 1 answers

    Jyotsna Bharti 7 years, 8 months ago

    a(2a²+3a-90)=0 2a²+3a-90=0 2a²-12a+15a -90=0 2a(a-6)+15(a-6)=0 (2a+15)(a-6) 2a+15=0 a-6=0⇒a=6 2a=-15 a=-15/2 so a=-15/2 or a=6

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