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I have a couple of questions on my summer homework and I don't know how to solve them:

Find the value of 4+5[14-(8+3)]

The choices: 27, 19, 49 or -46

Evaluate (a +y)squared+2y if a=5 and y= -3 <
The choices: 58, -2, 70 or 10

I tried to solve them but I can't. I'm used to having equations that equal eachother. Oh, if you can, can you show your work or tell me how you did it. Thanks!!

2007-06-26 10:31:42 · 3 answers · asked by Rahwa 4 in Science & Mathematics Mathematics

3 answers

4+5[14-(8+3)]

4+5[14-11]

4+5[3]

4+15

19





(a +y)squared+2y if a=5 and y= -3

(5-3)^2 +2(-3)

2^2-6

4-6

-2

2007-06-26 10:38:22 · answer #1 · answered by Purgatory 3 · 0 0

Find the value of 4+5[14-(8+3)] =
4 + 5[14-11] =
4 + 5[3] =
4 + 15 = 19

The choice is: 19
><
Evaluate (a +y)squared+2y if a=5 and y= -3 < (a+y)² + 2y =
(5-3)² + 2(-3) = 2² -6 = 4 - 6 = -2

The choice is: -2.
><

2007-06-26 17:45:09 · answer #2 · answered by aeiou 7 · 0 0

There're just 3 things in algebra: evaluating (and simplifying) expressions, solving equations, and graphing. Not everything is solving equations. So

4 + 5[ 14 - (8+3)] =
4 + 5[ 14 - 11] =
4 + 5[ 3] =
4 + 15 =
19 ..................... just order of operations, eh. Alg 1

(a + y)² + 2y =
(5 + -3)² + 2(-3) =
2² - 6 =
4 - 6 =
-2 ........ just substitute and evaluate.

2007-06-26 17:40:14 · answer #3 · answered by Philo 7 · 0 0

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