Identify b and c: Identify b and c in the quadratic expression k2+12k+11. Compare k2+12k+11 with the standard quadratic form x2+bx+c. b=12c=11
Compare with standard form: Find two numbers whose product is c(11) and whose sum is b(12). We need to find two integersm and n such that: m×n=11m+n=12 Since 11 is a prime number, the only pair of factors that multiply to 11 are 11 and 1. Checking the sum: b(12)0 The numbers 11 and 1 satisfy both conditions.
Find product and sum: Write the quadratic expression in its factored form using the numbers found in Step 2.The factored form is:(k+11)(k+1)
More problems from Factor quadratics with leading coefficient 1