exam Maths Puzzle Numerical Ability

solve by completing the square: x^2-2x-1=0

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exam Other Question

Please help me solve this problem

3^x+4=5^x-1

(x+4)log3=(x-1)log5

xlog3+4log3=xlog5-1log5

4log3+1log5=xlog3-xlog5

x=4*0.47712+1*0.69897/0.69897-0.47712



Could you please show the steps and solution to this statement:

Find the slope and the intercept of the following equation:
4x+3y=12

Thanks in advance!