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Solve the question: (i) ax^2 + bx (ii) 7p^2 + 21q^2 (iii) 2x^3 + 2xy^2 + 2xz^2

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Solve the question:

(i) ax2 + bx

(ii) 7p2 + 21q2

(iii) 2x3 + 2xy2 + 2xz2

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1 Answer

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Best answer

(i) ax2 + bx 

= a × x × x + b × x 

= x(ax + b)

(ii) 7p2 + 21q2 

= 7 × p × p + 3 × 7 × q × q 

= 7(p2 + 3q2)

(iii) 2x3 + 2xy2 + 2xz2 

= 2x(x2 + y2 + z2)

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