Find the zeroes of the polynomial p(x) = x2−5x+6x^2 - 5x + 6 and verify the relationship between the zeroes and the coefficients.

Answer: The zeroes of the polynomial p(x)=x2−5x+6p(x) = x^2 - 5x + 6 are x=2x=2 and x=3x=3. The relationship between the zeroes and coefficients is verified as: Sum of zeroes = 2+3=52+3=5 and −b/a=−(−5)/1=5-b/a = -(-5)/1 = 5. Product of zeroes = 2×3=62 \times 3 = 6 and c/a=6/1=6c/a = 6/1 = 6.

Step-by-step solution

Step 1: Find the zeroes by factorization

To find the zeroes of the polynomial, we set p(x)=0p(x) = 0. We then factor the quadratic expression x2−5x+6x^2 - 5x + 6. We look for two numbers that multiply to 6 and add up to -5. These numbers are -2 and -3. We split the middle term, −5x-5x, into −2x−3x-2x - 3x and then factor by grouping.

Step 2: Determine the zeroes

From the factored form (x−2)(x−3)=0(x - 2)(x - 3) = 0, we use the Zero Product Property, which states that if the product of two factors is zero, then at least one of the factors must be zero. This gives us the two zeroes of the polynomial.

Step 3: Identify coefficients

For a quadratic polynomial in the standard form ax2+bx+cax^2 + bx + c, we identify the coefficients aa, bb, and cc. In our polynomial x2−5x+6x^2 - 5x + 6, the coefficient of x2x^2 is a=1a=1, the coefficient of xx is b=−5b=-5, and the constant term is c=6c=6.

Step 4: Verify sum of zeroes

Let the zeroes be α=2\alpha = 2 and β=3\beta = 3. The sum of the zeroes is α+β=2+3=5\alpha + \beta = 2 + 3 = 5. According to the relationship between zeroes and coefficients, the sum of the zeroes is also equal to −b/a-b/a. We calculate −b/a=−(−5)/1=5-b/a = -(-5)/1 = 5. Since both values are equal, the relationship is verified.

Step 5: Verify product of zeroes

The product of the zeroes is αβ=2×3=6\alpha \beta = 2 \times 3 = 6. According to the relationship between zeroes and coefficients, the product of the zeroes is also equal to c/ac/a. We calculate c/a=6/1=6c/a = 6/1 = 6. Since both values are equal, the relationship is verified.

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