Question

solve the ticked ones only please​

Answer 1

Step-by-step explanation:

(1) x^2 - 7x + 10 = 0

x^2 - 5x - 2x + 10 = 0

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

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

x = 5,2

(2)4x^2 = 25

x^2 = 25/4

x = +5/2, -5/2

(3) 9x^2 - 1 = 0

9x^2 = 1

x^2 = 1/9

x = +1/3, -1/3

(4)x^2 - x/20 - 1/20 = 0

20x^2 - x - 1 = 0

20x^2 - 5x + 4x - 1 = 0

5x (4x - 1) + 1 (4x - 1) = 0

(4x - 1) (5x + 1) = 0

x = 1/4 , -1/5

hope it helps.

Answer 2

solve the ticked ones only please

Step-by-step explanation:

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