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X is equal to -1, her's my working out:
- add 5 to both sides= 9x2+4x=5
- -4x from both sides= 9x2=5-4x
- square root both sides, then re-square (this may be incorrect) to get 9x=5-4x
- add 4x to both sides= 9x=4x=5
- use trial and error to guess x =-1
Substitute -1 into your original equation (be careful with minus signs etc) and you'll find -1 is correct.
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∙ 14y ago
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What is 9x squared plus 4x - 2?
It is a quadratic equation in x.
What is the anwer to 4x plus 7 equals 9x plus 7?
4x+7=9x+7 -5x=0 x=0
9x plus 8 equals 4x plus 23 x equals?
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What is 4x plus 55 equals 9x plus 10?
4x + 55 = 9x + 10 55 = 5x + 10 45 = 5x x = 9
How much is 9x equals 4x plus 45?
9x = 4x + 45 5x = 45x = 9
What is 9x squared plus 4x - 2?
It is a quadratic equation in x.
What is the anwer to 4x plus 7 equals 9x plus 7?
4x+7=9x+7 -5x=0 x=0
9x plus 8 equals 4x plus 23 x equals?
9x + 8 = 4x + 23Subtract 8 from both sides9x = 4x + 15Subtract 4x from both sides5x = 15Divide both sides by 5x = 3
What is 4x plus 55 equals 9x plus 10?
4x + 55 = 9x + 10 55 = 5x + 10 45 = 5x x = 9
What is 9x-22 equals 23 plus 4x?
x=9
If 4x plus 3 equals 9x-4 what is x?
4x+3=9x-4+4 +44x+7=9x-4x -4x7=5x-------57/5=1.41.4=x
What is the answer to 9x plus 3-25 equals 4x-2?
9x+3-25 = 4x-2 5x = 20 x = 4
What is 5X plus 4X-10 equals 35?
5x+4x-10 = 35 9x = 35+10 9x = 45 x = 5
How do you simplify -4x plus 9x equals?
minus 4 plus 9 = 5, so 5x
9x-6 equals 4x plus 20 find x?
x=5.2
What is 9x minus 5 plus 4x minus 10 equals 180?
It is possible.
