Replace * with a monomial so that the trinomial may be represented by a square of a binomial: 1) * + 28a + 49
2) 36 - 24x + *
3) 6.25a^2 + * + 1/4b^2
4) * + 2bc + 100c^2

What’s your question.

First step is to get rid of the square root. remember that a square root is the same as raising to the (1/2) power. see below: multiply exponents per exponent rules to get: remember you subtract exponents from the denominator and add exponents in the numerator so: simplify further: so a is the correct choice. if you don't understand this google exponent rules and it will you understand. look at the image results.

Hey there,   128 *(2/3) = 85.3

85.3-64 = 21.3

so laura has already added 85.3 grams of chocolate powder and she has gone over the amount specified in the recipe by 21.3 grams

hope i ! have a great  day!