Exercise 7.4 Factorize each of the following expressions : (1) qr – pr + qs – ps Solution: qr – pr + qs – ps = (qr – pr) + (qs – ps) = r(q – p) + s(q – p) (q – p) as the common factor = (r + s) (q – […]
Exercise 7.4 Factorize each of the following expressions : (1) qr – pr + qs – ps Solution: qr – pr + qs – ps = (qr – pr) + (qs – ps) = r(q – p) + s(q – p) (q – p) as the common factor = (r + s) (q – […]