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Hi there! Have questions about your homework? At Brainly, there are 60 million students who want to help each other learn. Questions are usually answered in less than 10 minutes. Try it for yourself by posting a question! :D

questions: 1.how did you find the solutions of each equation? 2.What mathematics concepts or principles did you apply in finding the solutions?explain how you applied these.

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1. x²-16=0 ; (x+4)(x-4)=0 ; x=4 or -4 2. t²-81=0 ; (t+9)(t-9)=0 ; t=9 or -9 3. r²-100=0 ; (r+10)(r-10)=0 ; r=10 or -10 4. x²-144=0 ; (x+12)(x-12)=0 ; x=12 or -12 5. 2s²-50=0 ; s²-25=0 ; (s+5)(s-5)=0 ; s=5 or -5 6. 4x²-225=0 ; (2x-15)(2x+15)=0 ; x=7.5 or -7.5 7. 3h²-147=0 ; h²-147/3=0 ; (h+√[147/3])(h-√[147/3])=0 ; (h+√49)(h-√49)=0 ; (h+7)(h-7)=0 ; h=7 or -7 8.(x-4)²-169=0 ; (x-4-13)(x-4+13)=0 ; (x-17)(x+9)=0 ; x=17 or -9 9. (k+7)²-289=0 ; (k+7-17)(k+7+17)=0 ; (k-10)(k+24)=0 ; k=10 or -24 10. (2s-1)²-225=0 ; (2s-1+15)(2s-1-15)=0 ; (2s+14)(2s-16)=0 ; s=-7 or 8

1. Through the difference of two squares. a²-b²=(a+b)(a-b). 2. Difference of two squares.