Answer:
133
Step-by-step explanation:
x^2 + 9x - 13 = 0
a = 1 , b = 9 , c = -13
b^2 - 4 ac = 9^2 - ( 4 × 1 × -13 )
= 81 + 52
= 133
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Answer:
133
Step-by-step explanation:
x^2 + 9x - 13 = 0
a = 1 , b = 9 , c = -13
b^2 - 4 ac = 9^2 - ( 4 × 1 × -13 )
= 81 + 52
= 133