What number must be added to the polynomial to complete the square? use the slash mark ( / ) as a fraction bar if necessary. x2 + x

Hassan bought a package of tofu. the temperature of the tofu was 14° celsius when hassan put the package into the freezer. he left the tofu in the freezer until it reached –19° celsius. which expressions explain how to find the change in temperature, in degrees celsius, of the package of tofu? select three that apply.