book Maths Puzzle Numerical Ability

sqrt(2x-5)-sqrt(x-3)=1

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book Other Question

in the polynomial below, put it in standard form, what is the degree, leading coefficient and the coefficient of y variable term?

5xpower2 - 2x + 10y - 6xpower 2 - 7 + x FIND THE SLOP OF THE LINE WITH AN X-INTERCEPT OF -2 AND A Y -INTERCEPT OF 4.