Question

If x*x-2x-35=0 then x=?  

A. 
-35

B. 
2x^3

C. 
-5

D. 
7

​

Answer 1

Answer:

${x}^{2} - 2x - 35 = 0 \\ {x}^{2} - 7x + 5x - 35 = 0 \\ x(x - 7) + 5(x - 7) = 0 \\ (x + 5)(x - 7) = 0 \\ x = - 5 \\ x = 7$

so c and d is right