Question

5. (a) Add: p(p-9), (9-r) and r(r-p)
(b) Add: 2x (z - x - y) and 2y (z - y - x)
(c) Subtract: 31 (1-4 m + 5 n) from 41 ( 10 n-3 m +21)
(d) Subtract: 3a (a + b + c)-2 b(a - b + c) from 4c (-a+b to​

Answer 1

Answer:

(a). p^2-9p+9-r+r^2-rp

(b). 2xz-2x^2-2xy+2yz-2y^2-2yz

2xz-2x^2-2xy-2y^2

(c). 41(10n-3m+21)-31(1-4m+5n)

410n-123m+861-31+124m-155n

255n+m+830

(d). 4c(-a+b)-{3a(a-b-c)-2b(a-b+c)}

4c(-a+b)-(3a^2-3ab+3ac-2ab+2b^2-2bc)

4c(-a+b)-(3a^2-5ab+3ac-2bc)

(-4ac+4bc-3a^2+5ab-3ac+2bc)

(6bc-3a^2+7ac)

-3a^2+7ac+6bc

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Answer 2

Answer:

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