(x square+4)(xsquare+3)=
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you start by finding a number that multiplies to 3 and adds to -4. they will both be negative as the product is positive and the sum negative. your numbers are -1 and -3. split up the 4x so that you can factor the equation further.
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Answer:
x⁴+7x²+12
Step-by-step explanation:
(X square+4)(X square+3)
(x²+4)(x²+3)
=x²(x²+3)+4(x²+3)
=(x⁴+3x²)+(4x²+12)
=x⁴+3x²+4x²+12
=x⁴+7x²+12
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