Respuesta :

Tareki
the quadratic formula constants here are a=4 ; b=11 ; c= -20
and by substitute in the formula above, you will get the two values of x
and the final answers are x= 5/4 ; x = -4
katu
-4 +- (square root) 896
-----------------------------------
22
Or simplified

4 (square root) 14
--------------------------
22

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