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It is known that 2 is a root of the quadratic equation 5x & sup2; + bx-10 = 0 with respect to X. find another root of the equation and the value of B I have no answer. Please list the methods in detail. There are two methods
∵ x = 2 is a root of the quadratic equation 5x & sup2; + bx-10 = 0 with respect to X
arcsinx-x
20+2b-10=0
2b=-10
b=-5
The equation is 5x & sup2; - 5x-10 = 0
x²-x-2=0
Solution
x1=2,x2=-1
The other root is x = - 1
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