Question

2x²+9x-15
$2 {x}^{2} + 9x - 15 > 0$

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Answer 1

Step-by-step explanation:

The first term is,  2x2  its coefficient is  2 .

The middle term is,  -9x  its coefficient is  -9 .

The last term, "the constant", is  -15 

Step-1 : Multiply the coefficient of the first term by the constant   2 • -15 = -30 

Step-2 : Find two factors of  -30  whose sum equals the coefficient of the middle term, which is   -9 .

     -30   +   1   =   -29     -15   +   2   =   -13     -10   +   3   =   -7     -6   +   5   =   -1     -5   +   6   =   1     -3   +   10   =   7     -2   +   15   =   13     -1   +   30   =   29