Q4 of 34 Page 252

The factorization of -x2 + 7x - 12 yields

-x2 + 7x - 12 can be factorized as-

-x2 + 4x + 3x - 12


-x(x - 4) + 3(x - 4)


(x - 4)(3 - x)


Also recheck by-


Sum of roots = 7 {-coefficient of x/ coefficient of x2}


Product of roots = 12 {constant/ coefficient of x2}

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