Question

simplify

a) p(p-q)+q(q-r)+r(r-p)

b) (8x+2y) (5x+3z)

c) (X+2) [x²+5y(x-2)]

d) x(x+2)+y(y-2)
​

Answer 1

Step-by-step explanation:

a) p²-pq+q²+qr+r²-rp

b) 8x(5x+3z) 2y(5x+3z)

40x²+24xz +10xy + 15yz

c) (x+2) [x²+5y(x-2)]

(x+2) (x²+5xy-10y)

x(x²+5xy-10y) 2(x²+5xy-10y)

x³+5x²y-10xy + 2x²+10xy-20y

x³+5x²y + 2x²-20y

d)x²+2x+y²- 2y

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