book Maths Puzzle Numerical Ability

i have a probel. i cant solve this question. DETERINE THE COEFFICIENT OF THE (A TO THE THRID POWER) TERM IN THE EXPANSION OF (A+1) TO THE TENTH POWER>

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book Other Question

Simplify the radical.
4 radical sign 3 + 2 radical sign
3) For the equation x- √x = 0, perform the following:
a) Solve for all values of x that satisfies the equation.



b) Graph the functions y=x and y=√x on the same