Math, asked by lokeshgopal1967, 1 month ago

write the solution set of the equation x^2+x-20=0 in roster form​

Answers

Answered by shafeequeahmad722
1

Answer:

x = 2

Step-by-step explanation:

given it x^2 + x-20 =0

so , x^2 + (5-4)x -20 = 0

x^2 + 5x - 4x -20 =0

2x ( x +5) - 4 ( x + 5 )=0

(2x-4) ( x + 5 ) = 0

then , 2x-4 = 0

so , 2x = 4

x = 4/2

x = 2

then , x+5 = 0

so , x = - 5 (असंगत )

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