\(-\sqrt{8} + \sqrt{128} - \sqrt{32} \) is equal to
Answer & explanation
Correct answer: option 2
⇒ \(-\sqrt{8} + \sqrt{128} - \sqrt{32}\)
⇒ \(-\sqrt{4 × 2} + \sqrt{64 × 2} - \sqrt{16 × 2}\)
⇒ \(-2\sqrt{2} + 8\sqrt{2} - 4\sqrt{2}\)
⇒ \(2\sqrt{2}\)
\(-\sqrt{8} + \sqrt{128} - \sqrt{32} \) is equal to
Correct answer: option 2
⇒ \(-\sqrt{8} + \sqrt{128} - \sqrt{32}\)
⇒ \(-\sqrt{4 × 2} + \sqrt{64 × 2} - \sqrt{16 × 2}\)
⇒ \(-2\sqrt{2} + 8\sqrt{2} - 4\sqrt{2}\)
⇒ \(2\sqrt{2}\)