exam Maths Puzzle Numerical Ability

Subract usin gthe vertical method

7x^2+6x from 9x^2-3

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exam Other Question

lnes a and b are perpendicular. The slope of line a is given. What is the slope of line b?

2/5
write a polynomial function with the given zeros.
1.2,3,-3,1
2.0,-8,2
3.-10,0,2