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Kryger [21]
3 years ago
7

Multiplying by a conjugate gives a rational number because (a + b)(a - b.= _____.

Mathematics
1 answer:
Usimov [2.4K]3 years ago
7 0
Use foil.

(a+b)(a–b)
a^2 -ab +ab -b^2
a^2 – b^2

Hope I helped :)
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