1.) 2r+8 = 12
2.) (a+b)² = 36 (Solution: (a+b)² = (2+-8)² = 36)
3.) 6d + 11 = 13 (Solution: 6d +11 = 6(1/3) + 11 = 13)
Practice Task 2
1.) 4g + 8g + (-2g) = 10g
2.) (3x +4y - 9) + (x - 4y - 5) = 4x - 14
3.) (-12a + 43b) + (47b + 34a) = 22a + 90b
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Answers & Comments
1.) 2r+8 = 12
2.) (a+b)² = 36 (Solution: (a+b)² = (2+-8)² = 36)
3.) 6d + 11 = 13 (Solution: 6d +11 = 6(1/3) + 11 = 13)
Practice Task 2
1.) 4g + 8g + (-2g) = 10g
2.) (3x +4y - 9) + (x - 4y - 5) = 4x - 14
3.) (-12a + 43b) + (47b + 34a) = 22a + 90b