Question
If $\Delta$ is an operation on integers such that $\text{a }\Delta\text{ b}=-\text{a}+\text{b}-(-2)$ for all integers a, b. Find the value of: $(-2)\ \Delta\ (-3)$
✓
Answer
Given, $\text{a }\Delta\text{ b}=-\text{a}+\text{b}-(-2)$$(-2)\ \Delta\ (-3)=-(-2) + (-3) - (-2)$
$=2-3+2$
$=4-3$
$=1$
$=2-3+2$
$=4-3$
$=1$
Need a full question paper?
Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.
Explore more
Similar questions
Draw the following.
A figure with exactly one line of symmetry
A figure with exactly one line of symmetry
Express as kilogram (kg) using decimals: $2750g$
→Find the sum: $1\frac{3}{5}+2\frac{4}{5}$
→Length and breadth of a bulletin board are $r \ cm$ and $t \ cm,$ respectively. If $x$ nails are used to repair one board, how many nails will be required to repair $15$ such boards$?$
→Find an integer $x$ such that
x + 0 = 0
→x + 0 = 0
Now mark any four points on your paper so that no three of them are on one line. Label them A, B, C and D. Draw all possible lines going through pairs of these points. How many lines do you get? Name them. How many angles can you name using A, B, C and D? Write them all down and mark each of them with a curve as in given figure.
Complete one of the following magic squares by supplying the missing numbers:
In figure $D$ is a point on side BC of a $\triangle\text{ABC}. AD $ is joined. Name all the triangles that you can observe in the figure. How many are they?
→Find the values of the following using properties: $1568 \times 184 - 1568 \times 84$
→Out of $1800$ students in a school, $750$ opted basketball, $800$ opted cricket and remaining opted table tennis. If a student can opt only one game, find the ratio of number of students who opted cricket to the number of students opting basketball.
→