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Scorpion4ik [409]
3 years ago
11

Help me in this x^2 - x = 12

Mathematics
1 answer:
aleksley [76]3 years ago
8 0

x^2 - x = 12

Move 12 over.

x^2-x-12=0

Factor trinomial.

(x-4)(x+3)=0

x=4,-3

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<img src="https://tex.z-dn.net/?f=108cm%20%7B%3F%7D%5E%7B2%7D%20" id="TexFormula1" title="108cm {?}^{2} " alt="108cm {?}^{2} " a
scoundrel [369]
A(base)=6*6=36
A( triangle)=1/2*(base of the triangle)*height( of the triangle)=1/2*6*4=12
one base +4 triangles=36+4*12=36+48 =84 cm²
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