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Subjects>Math>Math & Arithmetic

What X2 plus 7x minus 120 equals 0?

Updated: 10/25/2022

Wiki User

∙ 14y ago

Best Answer

Factorise: (x - 8)( x + 15) = 0

x - 8 = 0 or x + 15 = 0, so x = 8 or -15

Check: 64 + 56 = 120 OK; 225 - 105 = 120 OK

Job done.

Wiki User

∙ 14y ago

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9x-4 = 7x+8 9x-7x = 8+4 2x = 12 x = 6

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7x + 8 = 10x - 2 &there4; 3x = 10 &there4; x = 10/3

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8y-7x

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The required equation is: -7x = 63

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It is: x-1+4+7x-3 = 8x simplified

-46 equals 3x plus 7x?

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