exam Maths Puzzle Numerical Ability

I need help please!. find the zeros of (2x-7)^2(x^2-9) and state the multiplicity of each. Thanks so much.

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solve the equation x^2=5=4 could anyone help with these please? solve the given fractional equations. 1. 1/4-3^a-2/8 = 2^a+3/6 2. 4-a/1-a = 12/3-a+1 3. 2^x+7/14 - x+6/7 = 5/^x-4/3^x+1