Evaluate ∣∣ ∣∣205463891∣∣ ∣∣

Question 1 Report

Evaluate $| \begin{matrix} 2 & 0 & 5 \\ 4 & 6 & 3 \\ 8 & 9 & 1 \end{matrix} |$

5y - 2x -18 = 0

102

-102

-42

Answer Details

$| \begin{matrix} 2 & 0 & 5 \\ 4 & 6 & 3 \\ 8 & 9 & 1 \end{matrix} |$
= 2(6 - 27) - 0(4 - 24) + 5(36 - 48)
= 2(-21) - 0 + 5(-12)
= -42 + 5(-12)
= -42 - 60
= -102

Read lesson note on Algebraic Expressions (WAEC)

Algebraic Expressions

View Answer