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Solve the simultaneous equations x^2+y^2=1 and x+2y=1

x=1,y=0 or x=-3/5,y=4/5

Answered by Rosie P. • Maths tutor

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work out: ( 4 × 10^3 )^2 + 3.5 × 10^7 and give your answer in standard form.

What is red shift?

How do I solve a simultaneous equation?

Factorise x^2 + 5x + 6

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