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2√28-√75-1/√3 step by step |
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Answer» Answer: STEP BY STEP Step-by-step explanation: The first term is, x2 its coefficient is 1 . The middle term is, -28x its coefficient is -28 . The last term, "the constant", is +75 Step-1 : Multiply the coefficient of the first term by the constant 1 • 75 = 75 Step-2 : Find two factors of 75 WHOSE SUM equals the coefficient of the middle term, which is -28 . -75 + -1 = -76 -25 + -3 = -28 That's it Step-3 : Rewrite the polynomial splitting the middle term using the two factors found in step 2 above, -25 and -3 x2 - 25x - 3x - 75 Step-4 : Add up the first 2 terms, pulling out like factors : X • (x-25) Add up the last 2 terms, pulling out common factors : 3 • (x-25) Step-5 : Add up the four terms of step 4 : (x-3) • (x-25) Which is the desired factorization Equation at the end of step 1 : (x - 3) • (x - 25) = 0 FOLLOW ME MARK AS BRAINLIST |
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