8a^2 + 3a^2
11a^2
since both have a^2 you only have to add the coefficients
To calculate the sine of an angle, simply divide the length of the opposite side, 479.16, by the length of the hypotenuse, 610. To get the cosine, divide the length of the adjacent side, 377.5, by the length of the hypotenuse, 610.
x =(2-√24)/-2=1+√ 6 = 1.449
x =(2+√24)/-2=1-√ 6 = -3.449
5+2t because 5 more then is adding 5 and twice as many is doubling or multiplying by 2
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