Question

5 x square - 10 x minus 15 is equals to zero​

Answer 1

Answer:

x is 3 and -1

Step-by-step explanation:

5x² - 10x - 15 = 0

5x² + 5x - 15x - 15 = 0

5x(x + 1) - 15(x + 1) = 0

(5x - 15)(x + 1) = 0

5x - 15 = 0     ; x + 1 = 0

5x = 15    ; x = -1

x = 15/5   ; x = -1

x = 3        ; x = -1

Answer 2

Answer:

yes correct

Step-by-step explanation:

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