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trasher [3.6K]
4 years ago
15

Solve this using the quadratic formula. Show work 2x^2+7x−5=0

Mathematics
1 answer:
kozerog [31]4 years ago
8 0
Multiply the numbers (2*2=4)
=\frac{-7+\sqrt{7^2-4\cdot \:2\left(-5\right)}}{2\cdot \:2}

Apply the rule 
\sqrt{7^2+2\cdot \:4\cdot \:5}

7^2 =49
=\sqrt{49+2\cdot \:4\cdot \:5}

Multiply
\sqrt{49+40}

Add
\sqrt{89}

=\frac{-7-\sqrt{89}}{4}

Final solution:
x=\frac{-7+\sqrt{89}}{4},\:x=\frac{-7-\sqrt{89}}{4}

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4 years ago
Select the correct answer. Exponential function f is represented by the table. x -2 -1 0 1 2 f(x) -62 -30 -14 -6 -2 Function g i
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based on the given exponential functions, we can tell that C. Both functions are increasing, but function g increases at a faster average rate.

<h3 /><h3>what function is increasing faster?</h3>

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