60
To find the value of the expression 2x ^ 2 - 5x - 3 when x = 7 we can substitute with 7 and simplify the expression. Step 1: Substitute with 7: 2 * (7) ^ 2 - 5(7) - 3 Step 2: Simplify:
49 - 35 - 3 Step 3: Continue
simplifying: 98 - 35 - 3 Step 4:
Further simplify: 63 - 3 Step 5:
Calculate the final result: 60
Therefore, when x = 7 the value of the expression 2x ^ 2 - 5x - 3 is 60.
