Bentuk sederhana dari (3√ 7 + 5) (4√ 7 - √ 2 ) adalah
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[tex] \rm( 3\sqrt{ 7} + 5)(4 \sqrt{7} - \sqrt{2} )[/tex]
[tex] \rm = (3 \sqrt{7} \times 4 \sqrt{7} )(3 \sqrt{7} \times - \sqrt{2} )(5 \times 4 \sqrt{7} )(5 \times - \sqrt{2)} [/tex]
[tex] \rm = (12 \times 7) - (3 \sqrt{7 \times 2} ) + (5 \times 4) \sqrt{7} ) - 5 \sqrt{2} [/tex]
[tex] \rm = \red{ \bold{84 - 3 \sqrt{14} + 20 \sqrt{7} - 5 \sqrt{2} }}[/tex]
Jawaban:
84 - 3√14 + 20√7 - 5√2
Penjelasan:
(3√7+5)(4√7-√2)
= 84 - 3√14 + 20√7 - 5√2
*cmiiw
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