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What is the solution to the quadratic equation x2 plus 10x plus 25 equals 7?
Using the quadratic equation formula: x = -5-/+ the square root of 7
What is the solution of the equation x-12-25?
Without an equality sign the given expression can't be classed as an equation but it can be simplified to: x-37
3x plus 4y equals 90 4x-3y equals -5?
This is a simultaneous equation question. 4(3x+4y = 90) 3(4x-3y = -5) Multiply the top equation by 4 and the bottom equation by 3 then subtract the bottom equation from the top equation remembering that in maths a minus from a minus is equal to a plus. 12x+16y = 360 12x-9y = -15 And when subtracted: 0+25y = 375 Divide both sides of the equation by 25 to find the value of y: y = 15 Substitute 15 for y into the original equation to find the value of x: Solution: x = 10 and y = 15
What are all of the real or complex numbers that are solutions to the equation x2-25?
x2 - 25 = 0 is x2 = 25 thus x = 5 or x = -5, only 2 real solutions
What value of x satisfies the equation 2x plus 5 plus 3x equals 25?
2x + 5 + 3x = 25 5x + 5 = 25 Subtract 5 from both sides: 5x = 20 Divide both sides by 5: x = 4
