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Bad White [126]
3 years ago
9

14. x 2 + 10x − 25 = 0

Mathematics
2 answers:
Natali [406]3 years ago
7 0

think about two numbers that will get 25:

think about two numbers that will get 10

use the 5 times tables

5*5= 25

Use 5+5= 10

x^2+10x-25= 0

(x+5)(x+5)= 0

x+5= 0 , x+5= 0

x+5-5= 0-5

x= -5

x+5-5= 0-5

x= -5

Answer :

only x= 5

Rasek [7]3 years ago
6 0
28+10x-25=0
3+10x=0
10x=-3
x=-0.3
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