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space space space space space space space space space space space space open parentheses 2 over 3 xy close parentheses cross times open parentheses fraction numerator negative 9 over denominator 10 end fraction straight x squared straight y squared close parentheses

space space space 2 over 3 straight x open parentheses fraction numerator negative 9 over denominator 10 end fraction close parentheses straight X space xy space straight X space straight x squared straight y squared

space space space space space space space space space space space space minus space 2 over 3 straight x 9 over 10 cross times straight x cubed straight y cubed equals fraction numerator negative 3 over denominator 5 end fraction straight x cubed straight y cubed

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52.

Fint the product.

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53.

Find the product.

X x X²x X³x X⁴

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54.

Simplify 3x(4x - 5) + 3 and find its values for (i) x = 3 (ii) $space space space space space space space space straight x space equals space 1 half$

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55.

simplify a(a²+ a + 1) + 5 and find its values for (i) a = 0, (ii) a = 0, and (iii) a = -1.

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56.

(a) Add: p(p – q), q(q – r) and r(r – p)

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57.

Add: 2x(z – x – y) and 2y(z – y – x)

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58.

Subtract: 3l(l – 4m + 5n) from 41(10n + 3m + 2l)

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59.

Subtract: 3a(a + b + c) – 2b(a – b + c) from 4c(–a + b + c)

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60.

Multiply:
(–3x) and (–5y + 2) (ii) 5xy and (y² + 3)

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