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.22. If a + b + c = 9 and a+ b + c = 25. Find ab + bc + ca. |
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Answer» Answer: 34 Step-by-step EXPLANATION: a + B + c = 9 a + b + c = 25 By adding above two EQUATIONS 2a + 2b + 2c = 34 So, ab + bc + ca = 34 (as in both equations a variable is two time) please MARK as brainliesr |
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