exam Maths Puzzle Numerical Ability

Factor 6x^2 + 25 + 4

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exam Other Question

Can someone explain to me what are some challenges about working with rational expressions? What are some strategies to develope to overcome these challenges. Could you help me solve this system of equations:

3(2^x)-2^(x+y)+2=0
5(2^x+1)-2^(x+y+1)=16

i simplified it to be:

3(2^x)-2^(x)*2^(y)+2=0
5*2^(x)*2-2^(x)*2^(y)*2=16

th