Simplify: {-2}{3}+{-1}{5}

Correct Answer is : (−38)\; {-3}{8}(8−3)

Correct Answer is : (−38)\; {-3}{8}(8−3)

Test Index

BECE Mathematics 2019 Paper

Question : 31

Total: 40

Simplify:

\binom{-2}{3}+\binom{-1}{5}

Solution:

For a vector, simplify the tops by the operator and write the result at the top.

Simplify the downs by the operator and write the result at the down

The operator is + , hence the addition of the two vectors

= \left( {}^{-2+-1} 3+5\right) = \left( {}^{-3} 8\right)

Try subtraction (-) as an exercise

\left( {}^{-2-1} 3-5\right) = \left( {}^{-2+1}-2\right) =\left(-1-2\right)

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