Question

how to solve it how​

Answer 1

Answer:

Q1)

Step-by-step explanation:

in 78^2-42^2, use the expansion formula, a^2-b^2=(a+b)(a-b)

=(78+42)(78-42)=4320

which means; 36x=4320

x=120 answwr

please mark as brainliest

Answer 2

Answer:

Q1)

Step-by-step explanation:

in 78^2-42^2, use the expansion formula, a^2-b^2=(a+b)(a-b)

=(78+42)(78-42)=4320

which means; 36x=4320

x=120 answwr

please mark as brainliest