Assignments and Mathematical Musings from Mr. Kirk

Intermediate Algebra 2 Assignment for 12/7

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We discussed today that some quadratic equations can simply be solved using the square root (though with the specification that they still must include a plus/minus, since all* quadratic equations have two solutions). We also looked at an example of creating a quadratic equation from a word problem and solving it, taking care to ignore the answer that didn’t make sense in the context of the problem (the so-called extraneous solution). The notes can be found here, and your homework is HW 3.14 – Quadratic Word Problems. Check out this video for another example of a quadratic word problem involving area, and this video for more on solving equations with the square root.

*Okay, not all. Quadratics that factor to something like (+ 3)(+ 3) = 0 only have the one solution of x = -3.

Cumulative IXL Review Modules (newly added modules are in bold).

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