A negative exponent requires that you place the number in a fraction, for example, 5-2 = 1/5. 6-2=1/6 so your equation should be, 52 X 1/5, or 25 X1/5 which is 5.
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y2 * y-5 = y2 / y5 = 1/y3
5
Order of operation is key. Square first. 4 squared is 16. then multiply 16x-3= -48. A negative times a positive is a negative.
"Squared" means that something is multiplied by itself. For instance, 5 squared means the same as 5 times 5.
first, you square negative 4. Since negative times negative is positive, then you get positive sixteen., Then positive 16 times two is 32