1)5x-10=15 2) r^2+11r-26=0 3))0.3x^2-0.09x=0.12

Question

1)5x-10=15
2) r^2+11r-26=0
3))0.3x^2-0.09x=0.12

Answer 1

1)
5x=15+10
5x=25
x=5
2)
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3)
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