exam Maths Puzzle Numerical Ability

Add: 1/x+2 + 8/x-2?

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exam Other Question

which choice is equivalent to the fraction below? Hint: rationalize the denominator and simplify.

2-2√2/2+2√2

a. 1-√2
b. -3+2√2
c. 2+√2
d. 2-√2 Please help me solve for b for this equation: {{{ 4a-2b+3c=21 }}} {{{a+4b-5c=-3 }}} {{{5a-3b-2c=8 }}}