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[" (a) Add: ",(" iii ")a=-1.],[" (b) Add...

[" (a) Add: ",(" iii ")a=-1.],[" (b) Add: ",p(p-q),q(q-r)" and "r(r-p)],[" (c) Subtract: ",2x(z-x-y)" and "2y(z-y-x)],[" (d) Subtract: ",3/(l-4m+5n)" from "quad 4l(10n-3m+2l)],[,3a(a+b+c)-2b(a-b+c)" from "4c(-a+b+c)]

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(a) Add: p(p-q), q(q-r) and r(r-p) (l) add: 2x(z-x-y) and 2y(z-y-x) (w) Subtract: 3l(l-4m+5n) from 4l(10n-3m+2l) (ii) (d) Subtract: 3a(a+b+c)-2b(a-b+c) from 4c(-a+b+c)

(a) Add: p(p-q), q(q-r) and r(r-p) (l) add: 2x(z-x-y) and 2y(z-y-x) (w) Subtract: 3l(l-4m+5n) from 4l(10n-3m+2l) (ii) (d) Subtract: 3a(a+b+c)-2b(a-b+c) from 4c(-a+b+c)

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