Mathematics · Vector Algebra
If (a + b) · (a - b) = 4 and |a| = 4|b|, find the magnitudes of vectors a and b.
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 1|a| = 2√15, |b| = 9√15
- 2|a| = 2√15, |b| = 8√15
- 3|a| = 1√15, |b| = 3√15
- 4|a| = 8√15, |b| = 2√15✓
Correct answer
|a| = 8√15, |b| = 2√15
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