Question

split the middle term: x^2 + 9x - 1620.​

Answer 1

Step-by-step explanation:

The first term is, x2 its coefficient is 1 .

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

The last term, "the constant", is -1620

Step-1 : Multiply the coefficient of the first term by the constant 1 • -1620 = -1620

Step-2 : Find two factors of -1620 whose sum equals the coefficient of the middle term, which is 9 .

-1620 + 1 = -1619

-810 + 2 = -808

-540 + 3 = -537

-405 + 4 = -401

-324 + 5 = -319

-270 + 6 = -264

-180 + 9 = -171

-162 + 10 = -152

-135 + 12 = -123

-108 + 15 = -93

-90 + 18 = -72

-81 + 20 = -61

-60 + 27 = -33

-54 + 30 = -24

-45 + 36 = -9

-36 + 45 = 9

Answer 2

Answer:

-45 , 36

Step-by-step explanation:

x^2 +9x -1620 =0

x^2 +45x -36x -1620=0

x(x+45) -36(x+45) =0

(x+45)(x-36) =0

x= -45

x= 36

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