Evaluate: (23 – 15) + 4 - Mathematics

Evaluate:

(23 – 15) + 4

योग

(23 – 15) + 4 = 8 + 4 = 12

shaalaa.com

Concept of Substitution

क्या इस प्रश्न या उत्तर में कोई त्रुटि है?

अध्याय 20: Substitution (Including Use of Brackets as Grouping Symbols) - Exercise 20 (B)

अध्याय 20 Substitution (Including Use of Brackets as Grouping Symbols)
Exercise 20 (B) | Q 1.1

Fill in the blank, when:
x = 3, y = 6, z = 18, a = 2, b = 8, c = 32 and d = 0.

x + y = .......

If a = 3, b = 0, c = 2 and d = 1, find the value of ab − bc + cd − da

If a = 3, b = 0, c = 2 and d = 1, find the value of a² + b² − c² + d²

Simplify:

x − (x − y) − (− x + y)

Simplify:

p + (− q − r − s) − (p − q − r)

Simplify:

p + 2 (q − r − p)

Insert the bracket as indicated:

x − 2y = − (...................)

Find the value of 3ab + 10bc – 2abc when a = 2, b = 5 and c = 8.

Simplify:

`8"x"−(3"x"−overline(2"x"-3))`

If x = − 3, find the value of 2x³ + 8x² – 15.