q^2 -10q÷21 please solve this
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(c) p2 – q2 = p2 + 2pq – q2. (d) (p + q)2 = p2 + 2pq + q2. Solution. : The correct ... (iii) 4x2 – 20x + 25. (iv). 2. – 9. 9 y. (v) x4 – 256. Solution. : (i) 21x2y3 + 27x3y2.
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