Factorise 9x²-24x+10
5x²-9x+3
X²+X+1
4x²+3x-2
Plz do it fast
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1)The first term is, 9x2 its coefficient is 9 .
The middle term is, -24x its coefficient is -24 .
The last term, "the constant", is -10
Step-1 : Multiply the coefficient of the first term by the constant 9 • -10 = -90
Step-2 : Find two factors of -90 whose sum equals the coefficient of the middle term, which is -24 .
-90 + 1 = -89 -45 + 2 = -43 -30 + 3 = -27 -18 + 5 = -13 -15 + 6 = -9 -10 + 9 = -1 -9 + 10 = 1 -6 + 15 = 9 -5 + 18 = 13 -3 + 30 = 27 -2 + 45 = 43 -1 + 90 = 89
2)The first term is, 5x2 its coefficient is 5 .
The middle term is, -9x its coefficient is -9 .
The last term, "the constant", is +3
Step-1 : Multiply the coefficient of the first term by the constant 5 • 3 = 15
Step-2 : Find two factors of 15 whose sum equals the coefficient of the middle term, which is -9 .
-15 + -1 = -16 -5 + -3 = -8 -3 + -5 = -8 -1 + -15 = -16 1 + 15 = 16 3 + 5 = 8 5 + 3 = 8 15 + 1 = 16
3)The first term is, x2 its coefficient is 1 .
The middle term is, +x its coefficient is 1 .
The last term, "the constant", is +1
Step-1 : Multiply the coefficient of the first term by the constant 1 • 1 = 1
Step-2 : Find two factors of 1 whose sum equals the coefficient of the middle term, which is 1 .
-1 + -1 = -2 1 + 1 = 2
4)The first term is, 4x2 its coefficient is 4 .
The middle term is, +3x its coefficient is 3 .
The last term, "the constant", is -2
Step-1 : Multiply the coefficient of the first term by the constant 4 • -2 = -8
Step-2 : Find two factors of -8 whose sum equals the coefficient of the middle term, which is 3 .
-8 + 1 = -7 -4 + 2 = -2 -2 + 4 = 2 -1 + 8 = 7
hope it will help you....
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