exam Maths Puzzle Numerical Ability

Need answer to x^2 +2x +11 = (x+A)^2 + B where A and B are real numbers. What is A and what is B?

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exam Other Question

Please help me combine like terms with following equation. This is all ONE equation. :

1(3x^2)^4(-1/2square root of y)^0+4(3x^2)^3(-1/2square root of y)^1+6(3x^2)^2(-1/2square r If f(2x)=(x^2)+4x+1, what are all the values of t for which f(1/2)=-11/4, where f represents a function?