1.

(X square + 4)square​

Answer»

BASICALLY what you are asking is

(x {}^{2} + 4) {}^{2}

ASSUME

x {}^{2} = a \\ and \: 4 = b

then the new equation will be as follows

(a + b) {}^{2}

which is equal to

a {}^{2} + b {}^{2} + 2ab

SUBSTITUTING values of a and b

(x {}^{2} ) {}^{2} + 4 {}^{2} + 2(x {}^{2} )(4)

we \: get \\ x {}^{4} + 16 + 8x {}^{2}

This is your ANSWER


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