Question

if x=7,y=2,andz=4,find the value of 5x square + x square Y-y square Z​

Answer 1

Step-by-step explanation:

$5 {x}^{2} + {x}^{2} y - {y}^{2}z \\ = 5 {(7)}^{2} + {(7)}^{2} (2) - {(2)}^{2} 4 \\ = (5 \times 49) + (49 \times 2) - (4 \times 4) \\ = 245 + 98 - 16 \\ = \underline{ \underline{327}}$