If A= { x:x is a multiple of 5, x≤30 and x∈N } B={1,3,7,10,12,15,18,25}
Find (i) A∪B (ii)A∩B
Simplify these expressions and find their values if x = 3, a = − 1, b = − 2.
(i) 3x − 5 − x + 9 (ii) 2 − 8x + 4x + 4
(iii) 3a + 5 − 8a + 1 (iv) 10 − 3b − 4 − 5b
(v) 2a − 2b − 4 − 5 + a