3 years ago

Solve x^2 + 8x = 33 by completing the square. Which is the solution set of the equation?

Mathematics

1 answer:

ryzh [129]3 years ago

3 0

Answer:

A: {-11, 3}

Step-by-step explanation:

$x^2 + 8x = 33\\x^2+8x+16=33+16\\(x+4)^2=49\\x+4=\pm \sqrt{49} \\x=-4 \pm 7\\\\x_{1}=3 \\x_{2}=-11$

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