Question

what is the value of the expression below when c = 5 and d = 4? 5c² - 4d + 7

Explanation:

Step1: Substitute c=5, d=4

$5(5)^2 - 4(4) + 7$

Step2: Calculate exponents first

$5(25) - 4(4) + 7$

Step3: Perform multiplication operations

$125 - 16 + 7$

Step4: Do subtraction and addition

$109 + 7$

Answer:

116