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valentina_108 [34]
3 years ago
8

Pls help need answer ASAP 100 POINTS TO ANSWER I WILL REPORT U IF U ANSWER FOR ONLY POINTS

Mathematics
2 answers:
crimeas [40]3 years ago
7 0

Answer:

3   x^2 +12x-9

Step-by-step explanation:

5x^2 - (2x-3)^2

We need to FOIL the second term

(2x-3)^2  = (2x-3) (2x-3)  = 4x^2 -6x-6x+9 = 4x^2 -12x+9

Replacing it in to the original equation

5x^2 - (4x^2 -12x+9)

Distribute the minus sign

5x^2 - 4x^2 +12x-9

Combine like terms

x^2 +12x-9

motikmotik3 years ago
5 0

Answer:

Your answer is Number 3

Step-by-step explanation:

(2x-3)^{2} =\\(2x-3)(2x-3)=\\4x^{2} -6x-6x+9=\\4x^{2}-12x+9\\5x^{2}-(4x^{2}-12x+9)\\ -12x+9\\5x^{2}-(4x^{2}-12x+9)\\ 5x^{2} -4x^{2} +12x-9=\\x^{2}+12x-9\\

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