Question

Write the greatest common factor in each of the following terms. 

(i) – 18a², 108a 

(ii) 3x²y, 18xy², – 6xy 

(iii) 2xy, –y², 2x²y 

(iv) l²m²n, lm²n², l²mn² 

(v) 21pqr, –7p²q²r², 49p²qr 

(vi) qrxy, pryz, rxyz 

(vii) 3x³y²z, –6xy³z², 12x²yz³ 

(viii) 63p²a²r²s, – 9pq²r²s², 15p²qr²s², – 60p²a²rs² 

(ix) 13x²y, 169xy 

(x) 11x², 12y²

Answer 1

(i) -18a², 108a

= 18a² = 18 x a x a, 108a = 18 x 6 x a

Common factor = 18a