Question

solving the using formula .
5x² + 13x+8=0​

Answer 1

Answer:

-1 or -1.6

Step-by-step explanation:

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( -b ± $\sqrt{b^{2}-4ac$ ) / 2a

( -13 ± $\sqrt{13^{2}+4(5)(8) }$ ) / 2(5)

( -13 ± $\sqrt{169-160}$ ) / 10

( -13 ± √9 ) / 10

( -13 ± 3 ) / 10

( -13 + 3 ) / 10 or ( -13 - 3 ) / 10

( -10 / 10 ) or ( -16 / 10 )

-1 or -1.6

By any chance, if there's an err in my ans, do lemme know through the comments..