{(12√5 + 6√5 )} ×{(10√5 - 5√5 )} - 8² + 6² = ?
{(12√5 + 6√5 )} × {(10√5 - 5√5 )} - 8² + 6² = ? {√5(12 + 6)} × {√5(10 - 5)} – 64 + 36 = ? 18√5× 5√5 – 64 + 36 18 × 5 × 5 – 64 + 36 450 – 64 + 36 = 422
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