Question

(2.3^2-0.3^2) (4.2^2-5.8^2)

Answer 1

(5,29-0,09)(17,64-33,64)=5,2*(-16)=-83,2

Answer 2

(2.3^2-0.3^2) (4.2^2-5.8^2)=(2.3*2.3-0.3*0.3)(4.2*4.2-5.8*5.8)=(5.29-0.09)(17.64-33.64)=5.20*(-16)= -83.2

Answer 3

To calculate the expression (2.3^2 - 0.3^2) * (4.2^2 - 5.8^2), you can follow these steps:

1. Calculate the values inside the parentheses: (2.3^2 - 0.3^2) = (5.29 - 0.09) = 5.20 (4.2^2 - 5.8^2) = (17.64 - 33.64) = -16.00

2. Multiply the results together: 5.20 * (-16.00) = -83.20

So, (2.3^2 - 0.3^2) * (4.2^2 - 5.8^2) = -83.20.