exam Maths Puzzle Numerical Ability

The vector v=[4 5] can be written as a linear combination of the vectors v1=[1 3] and v2=[4 -2] by letting c1=? and c2=?. Find c1 and c2 to solve.

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exam Other Question

i KNOW THAT THIS IS PROBABLY A SIMPLY ONE BUT iM HAVING A TIME TRYING TO FIGURE HOW TO GET THE CORRECT ANSWER. DMVT math student.

SOLVE FOR B: AX+BY=C. how do you get an answer from this?
please help me dolve this equation
(SQRT h^2+1)+1)(SQRT h^2+1)-1)

thank you :]