parkersoulard parkersoulard
  • 17-04-2020
  • Mathematics
contestada

What are the solutions to the equation x2 + 4x - 5 = 0?
+
+
+
5
+
4
+
-3
+
-2
+ +
-1,1
2
3
4
5
x
-5
a. 1 ałd -5
b. -1 and 5
d.
1 and -5

Respuesta :

Wallind11
Wallind11 Wallind11
  • 17-04-2020

Answer:

x²+4x-5= 0

=>x²+5x-x-5=0

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

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

=>x= -5 or, x= 1

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