exam Maths Puzzle Numerical Ability

Ok. so this one is a graph of a positive, even parabola which means it opens up. the vertex is (-1,-2) and one of the points on the parabola is (0,-1). It's telling me to write a q

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please help me solve h(f(6))

if
h(x)= -x^2 + 6x
f(x)= 7x - 40
Can anyone help me on this problem?
solve x^2+7x-1=0

Finf the x-intercepts of:
f(x)=x^2+7x-1