Question

AreA of triangle is 9 then height is7cm less than base then find length breadth

Answer 1

Answer:

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Answer 2

Step-by-step explanation:

base=X

height=X-7

area of triangle = 1/2×base × height

9=1/2×X×(7-x)

9×2=7X-X^2

0=X^2-7X+18

0=(X^2+2X) + (9X+18)

= X(X+2)-9(X+2)

= (X-9) (X+2)

• X-9=0
• X=9
• X+2=0
• X=-2

base=X=9

height9-7=2