Evaluate algebraic expressions
1.) ×+4 , when ×=-5
2.)m²-8, when m=2
3.) 5a -4, when a =8
4.) 4 (p+1 ) , when p = -15
5.) (×+y )÷ 2, when x =7 and y = 1
1.) ×+4 , when ×=-5
2.)m²-8, when m=2
3.) 5a -4, when a =8
4.) 4 (p+1 ) , when p = -15
5.) (×+y )÷ 2, when x =7 and y = 1
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Answer:
1. -1
2. -4
3. 36
4. -56
5. 4
Step-by-step explanation:
1. -5+4 = -1
2. 2² - 8
4 - 8 = -4
3. 5 x 8 - 4
40 - 4 = 36
4. 4 x (-15 + 1)
4 x (-14)
-4 x 14 = -56
5. 7 + 1/ 2
8/2
Cross out the common factor
4