exam Maths Puzzle Numerical Ability

graph equation using intercept method


2x+3y=6 2x-3y=12

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exam Other Question

1) x^2-13x+30=0
2) x^-0.7x-0.44=0
I never really understood how to solve qudratic equations which are equal to zero.
Given: <7 is congruent to<6. Prove <1 is congruent to <4. Provide proof