3 years ago

Find the GCF of each pair 20 and 36

Mathematics

1 answer:

valina [46]3 years ago

8 0

The GCF of 20 & 36 is 4.

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$\boxed{\underline{\bf \: ANSWER}}$

$\sf \: ( 5 + 6 i ) ( 5 - 6 i )$

Multiply complex numbers 5+6i and 5-6i in the same way as you multiply binomials.

$\dashrightarrow \sf 5\times 5+5\times \left(-6i\right)+6i\times 5+6\left(-6\right)i^{2}$

By definition, i² is -1.

$\dashrightarrow \sf 5\times 5+5\times \left(-6i\right)+6i\times 5+6\left(-6\right)\left(-1\right)$

Do the multiplications.

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Now cancel -30i & +30i

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________

Hope it helps.

ŕάίήвόώşάĻţ2²2²

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Read 2 more answers