3 years ago

A ( b + c ) = a b + a c is an Algebraic Example of

Mathematics

1 answer:

zubka84 [21]3 years ago

3 0

Answer:

distributivity/distributive property

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X^4-x^2-42=0 <br>need to solve equation and find solution set

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That's a quadratic equation in $x^2$ , which means we get an extra square root and $\pm$ at the end.

$x^4 - x^2 - 42 = 0$

We factor,

$(x^2 - 7)(x^2+6) = 0$

$x^2 = 7 \quad \textrm{or} \quad x^2 = -6$

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