Question

Determine a,b,x e y para que as matrizes (x+y. 2a+b. 2x-y. a-b ) e ( 3. -1. 0. 7. ) sejam iguais

Answer 1

3x² - 9x - 2 = 0

Δ=b ²-4.a.c

Δ= (-9)² -4*(3)*(-2)

Δ = 81 - 4.3.-2

Δ = 81 + 24

Δ = 105

x' = 9 + √105 x' = 9 - √105

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2.3 2.3

x' = 9 + √105 x'' = 9 - √105

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6 6